Exploring sound corpora in SC

Hi @tedmoore,
im encountering this error for the first time while sorting the infos from each slices of a cluster into buffers (block number 7 from code above).
I had gotten warning about empty clusters, could that be a reason? I don’t understand though why the destination buffer is supposedly invalid as they’re allocate as usual!

cluster 7 id slice-94302
cluster 7 id slice-34196
cluster 7 id slice-172353
cluster 7 id slice-173521
cluster 20 id slice-87261
ERROR: FluidBufCompose: Invalid destination buffer
CALL STACK:
Object:reportError
arg this = “FluidBufCompose: Invalid de…”
Nil:handleError
arg this = nil
arg error = “FluidBufCompose: Invalid de…”
Thread:handleError
arg this =
arg error = “FluidBufCompose: Invalid de…”
Thread:handleError
arg this =
arg error = “FluidBufCompose: Invalid de…”
Object:throw
arg this = “FluidBufCompose: Invalid de…”
Meta_FluidBufCompose:processBlocking
arg this =
arg server =
arg source = 1002
arg startFrame = 0
arg numFrames = 1
arg startChan = 0
arg numChans = -1
arg gain = 1
arg destination = nil
arg destStartFrame = 0
arg destStartChan = 0
arg destGain = 0
arg freeWhenDone = true
arg action = nil
< FunctionDef in closed FunctionDef >
arg id = “slice-87261”
arg i = 0
ArrayedCollection:do
arg this = [*15145]
arg function =
var i = 0
List:do
arg this =
arg function =
Dictionary:keysValuesArrayDo
arg this =
arg argArray = [*64]
arg function =
var i = 10
var j = 3
var key = nil
var val = nil
var arraySize = nil
Dictionary:keysValuesDo
arg this =
arg function =
< closed FunctionDef >
var tmpbuf =
Routine:prStart
arg this =
arg inval = 43133.665797292

Thanks,
Jan