Notes:
metro v6.22, powerbook g4 / powermac g4, osx 10.3.5, 10.3.6, pluggo, other vsti's.
Repro steps:
1. load any vsti (drag from Plug-Ins window to Effects/Synths window)
2. switch to graphic editor [keystroke command+j], drums [keystroke d]
3. click the spray can tool
4. spray and crash
I can send a console log if you want to send me a debug build, however the crash is pretty straightforward. I didn't try it on os9 yet.