# FluidBufNMF crashes Supercollider server

**URL:** <https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682>\
**Category:** Bug Reports and Issues\
**Created:** [November 7, 2025, 12:08am UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682 "2025-11-07T00:08:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![woodwindblues](https://discourse.flucoma.org/letter_avatar_proxy/v4/letter/w/ba8739/32.png) [@woodwindblues](https://discourse.flucoma.org/u/woodwindblues)\
**Post date:** [November 7, 2025, 12:08am UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682/1 "2025-11-07T00:08:11Z")

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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](https://gist.github.com/michaelmariaott/e8c384e3d7508e364bf7d65b55c32c61).

System: macOS 15.5 (24F74)

Supercollider: 3.14.0

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**Author:** ![tedmoore](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/tedmoore/32/439_2.png) [@tedmoore](https://discourse.flucoma.org/u/tedmoore)\
**Post date:** [November 7, 2025, 4:52pm UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682/2 "2025-11-07T16:52:09Z")

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What version of FluCoMa are you on? I realized I’m on:

Fluid Corpus Manipulation Toolkit: version 1.0.7+sha.34a5435.core.sha.60c944d0

But now there is 1.0.9:

> **[Release 1.0.9 · flucoma/flucoma-sc](https://github.com/flucoma/flucoma-sc/releases/tag/1.0.9)**
>
> This is a release build of the FluCoMa SuperCollider package. The build hash is ba24128

// ================

This crash also happened for me on my 1.0.7 with this:

```js
b = Buffer.readChannel(s,FluidFilesPath("Nicol-LoopE-M.wav"))

c = Buffer(s);

FluidBufNMF.processBlocking(s,b,bases:c);

```

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<div class="post-metadata">

**Author:** ![tedmoore](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/tedmoore/32/439_2.png) [@tedmoore](https://discourse.flucoma.org/u/tedmoore)\
**Post date:** [November 7, 2025, 4:55pm UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682/3 "2025-11-07T16:55:34Z")

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I just upgraded to 1.0.9 and I get no crash:

```auto
b = Buffer.readChannel(s,FluidFilesPath("Nicol-LoopE-M.wav"))

c = Buffer(s);

FluidBufNMF.processBlocking(s,b,bases:c);

```

> **[Release 1.0.9 · flucoma/flucoma-sc](https://github.com/flucoma/flucoma-sc/releases/tag/1.0.9)**
>
> This is a release build of the FluCoMa SuperCollider package. The build hash is ba24128

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**Author:** ![woodwindblues](https://discourse.flucoma.org/letter_avatar_proxy/v4/letter/w/ba8739/32.png) [@woodwindblues](https://discourse.flucoma.org/u/woodwindblues)\
**Post date:** [November 12, 2025, 11:37pm UTC](https://discourse.flucoma.org/t/fluidbufnmf-crashes-supercollider-server/2682/4 "2025-11-12T23:37:50Z")

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Oh, somehow I missed the 1.0.9 release… that fixed it! 😅