Avisynth crashes with PixieDust()

[Terka]

i have a script like this:
loadplugin ...
avisource ...
import mvbob
mvbob()

everything works fine
but if i add a line :
mvbob()
pixiedust() <this line is the problem

avisynth crashes.
dustv5.dll was loaded, but after added the line -crash

should i use setmemorymax and how high?

[krieger2005]

Is the Colorspace YUY2 before calling Pixiedust?

[Terka]

of course not, im so stupid
now works fine

[neuron2]

Use a proper thread title in the future. I have fixed yours for you. Thank you.

[Terka]

sorry