Problem with Amiga 3000, hard disk, and Mercury 68040 accel

[FireflyST]

Hi All,

I'm trying to install AmigaOS 3.1 to upgrade to 3.9 on my A3000.  It has a 68040/35 accelerator (PPI Mercury) with 32MB of memory on it.  I'm having issues where the machine seems to be completely unstable - the floppy drives don't read properly and are generally erratic (they read fine for awhile then they just start throwing errors), and when I go to format the hard disk using the built in SCSI controller the machine just locks completely with a red software error.

Any suggestions/experiences with this type of setup?

Thanks!
Julian

[FireflyST]

I purchased the machine with WB 2.0 on it.  After installing the 3.1 roms is when this became a problem, though it does come up to a desktop.