The 800000B is likely to be caused by missing software that the system is expecting to be present. Exodus reported that error after the patch created a new and hence incomplete directory for Exodus: The Last War and I ran the executable. Different accelerators have different libraries that are required, in addition the A4000T requires a different version of Workbench and Setpatch creates problems IMHO. You probably know all of the above but just trying to help. I agree that the onboard SCSI is very useful.