It does sound like a graphics patch that's causing the issue with the C2P, have you installed any other patches?
You could try removing the pal and ntsc drivers, restarting and then setting the scummvm tooltype to PAL.
If that doesn't work, copy 'vga only' + 'Multiscan' over, restart and set the tooltype to vga.
If it's the AGA C2P routine causing the problem, you can verify by installing the ECS version of ScummVM and giving that a try (the main difference between them is the C2P routines used, the AGA one is lower-level for extra speed).
BTW I'm using ClassicWB 3.9 and it's great on my 030, why don't you give it a try?
Last edited by NovaCoder; 16 November 2011 at 23:23.