# Bug Reports and Issues

**URL:** https://discourse.flucoma.org/c/bug-reports-and-issues/5.md

[Latest](https://discourse.flucoma.org/latest.md) · [Categories](https://discourse.flucoma.org/categories.md)

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## [About the Bug Reports and Issues category](https://discourse.flucoma.org/t/about-the-bug-reports-and-issues-category/29)

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**Author:** [@tremblap](https://discourse.flucoma.org/u/tremblap)\
**Replies:** 0

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This is a place for formatted bug reports, to help the development team to reproduce and sort problems as smoothly and swiftly as possible. Please write short, to the point, answers to the following format: a short ti…

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## [Incompatible pointer type error in fluid.plotter.c when compiling puredata external for Raspberry Pi](https://discourse.flucoma.org/t/incompatible-pointer-type-error-in-fluid-plotter-c-when-compiling-puredata-external-for-raspberry-pi/2693)

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**Author:** [@enrique\_t](https://discourse.flucoma.org/u/enrique_t)\
**Replies:** 2\
**Last updated:** [July 28, 2026, 1:18pm UTC](https://discourse.flucoma.org/t/incompatible-pointer-type-error-in-fluid-plotter-c-when-compiling-puredata-external-for-raspberry-pi/2693 "2026-07-28T13:18:13Z")

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Hi, compiling flucoma-pd external for raspberry pi (Raspian Debian 13.2) results in an incompatible pointer error: fluid.plotter.c:715:74: error: assignment to ´t\_fpoint \*´ {aka ´struct \_fpoint \*´} from incompatible po…

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## [\[pd\] Bug in fluid.plotter](https://discourse.flucoma.org/t/pd-bug-in-fluid-plotter/2823)

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**Author:** [@yogi](https://discourse.flucoma.org/u/yogi)\
**Replies:** 5\
**Last updated:** [July 28, 2026, 1:06pm UTC](https://discourse.flucoma.org/t/pd-bug-in-fluid-plotter/2823 "2026-07-28T13:06:44Z")

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doing this I found a bug in fluid.plotter (pd) ,if fluid.plotter receives a “highlight” message, coordinates are output again when releasing mouse button. ( When not using highlight, fluid plotters behaves correctly , no…

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## [Order issue when converting imported dataset to buffer (Max)](https://discourse.flucoma.org/t/order-issue-when-converting-imported-dataset-to-buffer-max/2806)

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**Author:** [@moduloventuno](https://discourse.flucoma.org/u/moduloventuno)\
**Replies:** 7\
**Last updated:** [June 8, 2026, 12:39pm UTC](https://discourse.flucoma.org/t/order-issue-when-converting-imported-dataset-to-buffer-max/2806 "2026-06-08T12:39:37Z")

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Hey everyone! I found a bug in the process of converting a dataset to buffer with the “tobuffer” method. The issue is only present in datasets loaded from a JSON file, and I think it stems from the point identifier bein…

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## [Non-blocking issue](https://discourse.flucoma.org/t/non-blocking-issue/2801)

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**Author:** [@mattebass](https://discourse.flucoma.org/u/mattebass)\
**Replies:** 3\
**Last updated:** [June 5, 2026, 9:04am UTC](https://discourse.flucoma.org/t/non-blocking-issue/2801 "2026-06-05T09:04:22Z")

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Hi, I’m currently working on optimising the feature calculation process for a dataset, and I’m experiencing some issues with the non-blocking + queue mode. What I’m trying to do is trigger several different analyses in…

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## [Fluid.plotter / documentation / "colour" message method](https://discourse.flucoma.org/t/fluid-plotter-documentation-colour-message-method/2736)

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**Author:** [@yogi](https://discourse.flucoma.org/u/yogi)\
**Replies:** 1\
**Last updated:** [February 8, 2026, 2:12pm UTC](https://discourse.flucoma.org/t/fluid-plotter-documentation-colour-message-method/2736 "2026-02-08T14:12:44Z")

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Hello, in the html reference for the fluid.plotter object it is mentionned that the colour message’s inputs where The class (0 to 7) or Pd colour value (999 → RGB). I’m having difficulties setting Pd colour value, my …

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## [Clear message in fluid.stats](https://discourse.flucoma.org/t/clear-message-in-fluid-stats/2710)

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**Author:** [@felipetovarhenao](https://discourse.flucoma.org/u/felipetovarhenao)\
**Replies:** 1\
**Last updated:** [December 27, 2025, 5:04pm UTC](https://discourse.flucoma.org/t/clear-message-in-fluid-stats/2710 "2025-12-27T17:04:37Z")

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I just noticed that, when sending the clear message to fluid.stats , the leftmost outlet also outputs clear. This strikes me as undesirable behavior but wanted to check if there’s a reason for it, instead of, say, passin…

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## [Bug with plotter and waveform . puredata 0.55.2 / linux](https://discourse.flucoma.org/t/bug-with-plotter-and-waveform-puredata-0-55-2-linux/2482)

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**Author:** [@yogi](https://discourse.flucoma.org/u/yogi)\
**Replies:** 2\
**Last updated:** [November 17, 2025, 9:05am UTC](https://discourse.flucoma.org/t/bug-with-plotter-and-waveform-puredata-0-55-2-linux/2482 "2025-11-17T09:05:44Z")

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Hello, I had to put plotters and waveform in abstractions to save space on the screen, but then if they are updated while the abstraction is not opened , it gives a red error, and some gui functions don’t work anymore u…

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## [FluidBufNMF crashes Supercollider server](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682)

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**Author:** [@woodwindblues](https://discourse.flucoma.org/u/woodwindblues)\
**Replies:** 3\
**Last updated:** [November 12, 2025, 11:37pm UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682 "2025-11-12T23:37:50Z")

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Hello everyone, FluidBufNMF suddenly started to crash the supercollider server. The server has to be restarted twice to run again afterwards (it also crashes during the first restart). Here is the crash log. System: m…

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## [fluid.bufNMF~ tool crashing on DSP turn-on](https://discourse.flucoma.org/t/fluid-bufnmf-tool-crashing-on-dsp-turn-on/2675)

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**Author:** [@j.may.2394](https://discourse.flucoma.org/u/j.may.2394)\
**Replies:** 2\
**Last updated:** [October 30, 2025, 1:37pm UTC](https://discourse.flucoma.org/t/fluid-bufnmf-tool-crashing-on-dsp-turn-on/2675 "2025-10-30T13:37:50Z")

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Hi folks! I’m making an NMF tool that analyzes/resynthesizes audio, then allows for thru audio to run through the generated filters. Whenever I try to turn DSP on it crashes Max. I’m running a MacBook Pro M4, 24gb RAM, …

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## [FluidLabelSet.(s) crashes SC](https://discourse.flucoma.org/t/fluidlabelset-s-crashes-sc/2668)

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**Author:** [@Andres](https://discourse.flucoma.org/u/Andres)\
**Replies:** 1\
**Last updated:** [October 19, 2025, 1:29pm UTC](https://discourse.flucoma.org/t/fluidlabelset-s-crashes-sc/2668 "2025-10-19T13:29:02Z")

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Hello, I’ve been using FluCoMa’s FluidLabelSet for some time and I noticed that initialising an instance crashes the server in the new FluCoMa release from Aug 2025. This isn’t the case with the previous version so I wan…

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## [Noveltyslice pitch broken? since 2022?](https://discourse.flucoma.org/t/noveltyslice-pitch-broken-since-2022/2654)

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**Author:** [@tutschku](https://discourse.flucoma.org/u/tutschku)\
**Replies:** 2\
**Last updated:** [October 7, 2025, 5:19pm UTC](https://discourse.flucoma.org/t/noveltyslice-pitch-broken-since-2022/2654 "2025-10-07T17:19:14Z")

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Rodrigo reported something similar in 2022. I’m now trying to segment a monodic melody with no background noise and clear pitch changes. I’m trying to make sense of the noveltyslice parameters with the pitch algorithm. …

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## [Compiling flucoma-SC — python module error](https://discourse.flucoma.org/t/compiling-flucoma-sc-python-module-error/2623)

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**Author:** [@lfsaw](https://discourse.flucoma.org/u/lfsaw)\
**Replies:** 3\
**Last updated:** [September 1, 2025, 11:31am UTC](https://discourse.flucoma.org/t/compiling-flucoma-sc-python-module-error/2623 "2025-09-01T11:31:26Z")

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hi there, I’m trying to compile flucoma-sc on my M1 machine and run into issues: cmake -DSC\_PATH=$HOME/vol/dev/sound/src/SuperCollider .. runs fine, however make install results in \[ 18%\] Making SC docsTraceback…

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## [Max attribute behaviour is messing with max user expectations in help files](https://discourse.flucoma.org/t/max-attribute-behaviour-is-messing-with-max-user-expectations-in-help-files/2639)

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**Author:** [@rodrigo.constanzo](https://discourse.flucoma.org/u/rodrigo.constanzo)\
**Replies:** 2\
**Last updated:** [August 23, 2025, 10:55am UTC](https://discourse.flucoma.org/t/max-attribute-behaviour-is-messing-with-max-user-expectations-in-help-files/2639 "2025-08-23T10:55:02Z")

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Ok went through all of these. fluid.dataset~ “audio-descriptor” and “merging” tabs pours off patch size: There’s also some inconsistencies/weirdness with fluid.noveltyfeature~ / fluid.noveltyslice~ with @maxfilt…

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## [Breaking changes in SuperCollider 3.14.0](https://discourse.flucoma.org/t/breaking-changes-in-supercollider-3-14-0/2617)

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**Author:** [@heretogo](https://discourse.flucoma.org/u/heretogo)\
**Replies:** 2\
**Last updated:** [July 31, 2025, 12:01pm UTC](https://discourse.flucoma.org/t/breaking-changes-in-supercollider-3-14-0/2617 "2025-07-31T12:01:09Z")

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Apparently the new version breaks some FluCoMa UGens due to incompatible Boost. Do they work with nightlies?

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## [Fluid.waveform, "latch", always on ( pure data )](https://discourse.flucoma.org/t/fluid-waveform-latch-always-on-pure-data/2582)

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**Author:** [@yogi](https://discourse.flucoma.org/u/yogi)\
**Replies:** 10\
**Last updated:** [June 28, 2025, 4:48pm UTC](https://discourse.flucoma.org/t/fluid-waveform-latch-always-on-pure-data/2582 "2025-06-28T16:48:19Z")

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Hello, in the html documentation I read that “latch” option is present and “zero” by default. But the object returns the mouse position on mouse up, even when “latch” is 0. I would expect not to return anything unless…

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## [SC crashes when using FluidBuf\* and FluidDataSet](https://discourse.flucoma.org/t/sc-crashes-when-using-fluidbuf-and-fluiddataset/2539)

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**Author:** [@juje](https://discourse.flucoma.org/u/juje)\
**Replies:** 6\
**Last updated:** [March 15, 2025, 1:20am UTC](https://discourse.flucoma.org/t/sc-crashes-when-using-fluidbuf-and-fluiddataset/2539 "2025-03-15T01:20:26Z")

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Hello! Glad to be here. I’ve started trying to explore the FluCoMa toolset in SuperCollider and am experiencing some issues with a lot of the UGens provided. Before I get into the details, I want to give full disclosure…

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## [Crash in fluid.bufstats](https://discourse.flucoma.org/t/crash-in-fluid-bufstats/2514)

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**Author:** [@tremblap](https://discourse.flucoma.org/u/tremblap)\
**Replies:** 1\
**Last updated:** [February 7, 2025, 1:06pm UTC](https://discourse.flucoma.org/t/crash-in-fluid-bufstats/2514 "2025-02-07T13:06:25Z")

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can you make a real bug report on github please so I can chase this?

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## [Fluid.bufampgate~: @lookahead/@lookback override @minslicelength, @minsilencelength](https://discourse.flucoma.org/t/fluid-bufampgate-lookahead-lookback-override-minslicelength-minsilencelength/2503)

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**Author:** [@slo\_hand](https://discourse.flucoma.org/u/slo_hand)\
**Replies:** 7\
**Last updated:** [January 22, 2025, 7:55pm UTC](https://discourse.flucoma.org/t/fluid-bufampgate-lookahead-lookback-override-minslicelength-minsilencelength/2503 "2025-01-22T19:55:29Z")

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As per the subject. I’m using fluid.bufampgate~ (then combining onsets and offsets with fluid.bufnoveltyslice~). I need to ensure minimum slice lengths for processing by fluid.bufstft~ down the line. In fluid.bufampgat…

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## [Fluid.kmeans~ cluster "overflow"?](https://discourse.flucoma.org/t/fluid-kmeans-cluster-overflow/2452)

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**Author:** [@rodrigo.constanzo](https://discourse.flucoma.org/u/rodrigo.constanzo)\
**Replies:** 4\
**Last updated:** [November 18, 2024, 3:58pm UTC](https://discourse.flucoma.org/t/fluid-kmeans-cluster-overflow/2452 "2024-11-18T15:58:18Z")

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So not sure if this is expected behavior or not, but it feels like something is breaking and it should perhaps report back in a different way. I’ve found that when setting the amount of clusters fairly high (it varies p…

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## [Patch cables removed from list2buf on .amxd](https://discourse.flucoma.org/t/patch-cables-removed-from-list2buf-on-amxd/2453)

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**Author:** [@davispolito](https://discourse.flucoma.org/u/davispolito)\
**Replies:** 1\
**Last updated:** [November 18, 2024, 3:48pm UTC](https://discourse.flucoma.org/t/patch-cables-removed-from-list2buf-on-amxd/2453 "2024-11-18T15:48:31Z")

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Hi, I am getting abug when I save and reopen a max4live device with a patch cable on the list2buf out the patch cables get removed. I am trying to add point search and remove abilities using the dict outputs of the list…

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## [Pca bug or misunderstanding?](https://discourse.flucoma.org/t/pca-bug-or-misunderstanding/2437)

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**Author:** [@tutschku](https://discourse.flucoma.org/u/tutschku)\
**Replies:** 5\
**Last updated:** [November 3, 2024, 9:27am UTC](https://discourse.flucoma.org/t/pca-bug-or-misunderstanding/2437 "2024-11-03T09:27:41Z")

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I have a dataset with 160 dimensions and want to reduce it with pca while keeping the fraction of total variance to 0.95. But I’m running into a problem when the number of rows is smaller than the number of dimensions.…

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## [FluCoMa patches don't open, no error message](https://discourse.flucoma.org/t/flucoma-patches-dont-open-no-error-message/2417)

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**Author:** [@Theseus](https://discourse.flucoma.org/u/Theseus)\
**Replies:** 7\
**Last updated:** [November 1, 2024, 5:12pm UTC](https://discourse.flucoma.org/t/flucoma-patches-dont-open-no-error-message/2417 "2024-11-01T17:12:35Z")

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Hello, I’m on a pretty powerful msi, windows 11 and Max Version 8.6.4. I’m a conservatory student that did some lessons on FluCoMa and wanted to review the patches that we did in class, but when I tried to open them th…

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## [Beta 4 buf2list](https://discourse.flucoma.org/t/beta-4-buf2list/1059)

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**Author:** [@tutschku](https://discourse.flucoma.org/u/tutschku)\
**Replies:** 18\
**Last updated:** [October 28, 2024, 6:49pm UTC](https://discourse.flucoma.org/t/beta-4-buf2list/1059 "2024-10-28T18:49:36Z")

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Lists are cropped to length 256. Is there an argument to specify longer lists? The help file does not specify anything, other than max list length is 32767.

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## [Fluid.mlpregressor~ not returning prediction inside collapsed M4L device](https://discourse.flucoma.org/t/fluid-mlpregressor-not-returning-prediction-inside-collapsed-m4l-device/2259)

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**Author:** [@pmeyer](https://discourse.flucoma.org/u/pmeyer)\
**Replies:** 22\
**Last updated:** [September 14, 2024, 5:52pm UTC](https://discourse.flucoma.org/t/fluid-mlpregressor-not-returning-prediction-inside-collapsed-m4l-device/2259 "2024-09-14T17:52:07Z")

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Hello, I have a Max for Live device that is built around Ted’s “controlling a synth using a neural network tutorial” (https://www.youtube.com/watch?v=XfNZzQPdPG0) with fluid.mlpregressor~. The patch is working as expect…

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## [Fluid.transients~ spike-y/glitchy CPU use?](https://discourse.flucoma.org/t/fluid-transients-spike-y-glitchy-cpu-use/2399)

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**Author:** [@rodrigo.constanzo](https://discourse.flucoma.org/u/rodrigo.constanzo)\
**Replies:** 5\
**Last updated:** [September 13, 2024, 12:37pm UTC](https://discourse.flucoma.org/t/fluid-transients-spike-y-glitchy-cpu-use/2399 "2024-09-13T12:37:53Z")

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Before posting this as a git issue, wanted to check here to see if I’m missing something. It seems like fluid.transients~ likes to make pops all over the audio when it’s loaded up. As in, if I’m using something like thi…

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## [Instacrash with fluid.bufpitch~ (possible buffer memory corruption?)](https://discourse.flucoma.org/t/instacrash-with-fluid-bufpitch-possible-buffer-memory-corruption/2393)

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**Author:** [@rodrigo.constanzo](https://discourse.flucoma.org/u/rodrigo.constanzo)\
**Replies:** 4\
**Last updated:** [September 10, 2024, 9:39pm UTC](https://discourse.flucoma.org/t/instacrash-with-fluid-bufpitch-possible-buffer-memory-corruption/2393 "2024-09-10T21:39:24Z")

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So I’ve been getting frequent and fairly consistent crashes in a beta version of Max (which apparently is more verbose about memory funny business) and after thinking it was pointing at font-related things, it turns out …

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## [Bug in the Tutschku example collection's NMF Model](https://discourse.flucoma.org/t/bug-in-the-tutschku-example-collections-nmf-model/2314)

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**Author:** [@5ibl1](https://discourse.flucoma.org/u/5ibl1)\
**Replies:** 4\
**Last updated:** [September 6, 2024, 2:00pm UTC](https://discourse.flucoma.org/t/bug-in-the-tutschku-example-collections-nmf-model/2314 "2024-09-06T14:00:29Z")

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I’m experimenting with the downloadable Hans Tutschku examples found here https://learn.flucoma.org/explore/tutschku/ and trying to build a database with the example patches. In the second part of the collection there s…

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## [FluidBufOnsetSlice closes the server. (Linux, Supercollider)](https://discourse.flucoma.org/t/fluidbufonsetslice-closes-the-server-linux-supercollider/2384)

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**Author:** [@drewmfarrar](https://discourse.flucoma.org/u/drewmfarrar)\
**Replies:** 4\
**Last updated:** [August 26, 2024, 10:46am UTC](https://discourse.flucoma.org/t/fluidbufonsetslice-closes-the-server-linux-supercollider/2384 "2024-08-26T10:46:45Z")

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I recently set up a dual boot of linux (Mint) and am running into an issue when using FluidBufOnsetSlice. Using the realtime version of onset slice works just fine, but when I try to use FluidBufOnsetSlice the server exi…

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## [Compiling for Raspberry Pi 4](https://discourse.flucoma.org/t/compiling-for-raspberry-pi-4/1652)

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**Author:** [@broccolistem](https://discourse.flucoma.org/u/broccolistem)\
**Replies:** 24\
**Last updated:** [August 8, 2024, 8:59am UTC](https://discourse.flucoma.org/t/compiling-for-raspberry-pi-4/1652 "2024-08-08T08:59:58Z")

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Hi, I tried to compile Flucoma from source onto a Raspberry Pi 4 8gb, and ran into issues during “make install”. Maybe Flucoma does not support Raspberry Pi but they do support ARM, so I wanted to try it out. \[EDIT\] I…

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