I believe the crash is dimension related (width, height)
No crash if you resize to 640x480, preview , then change to 512x512. But it only works after you run a script first that works (this is in avspmod) . If you start with 512x512, it crashes
It's odd behaviour
Code:
BlankClip(length=1, width=256, height=256, pixel_type="Y8")
mt_lutspa(mode="relative closed", expr="x 255 *")
ConvertToRGB(matrix="PC.601")
#pointresize(640,480) #1st run
pointresize(512,512)
histogramrgbparade
EDIT: actually I can't reproduce it consistently, it sometimes crashes. But resizing to 640x480 always works. It seems height related - you need a certain min height