I wanted to install a different BB2 game this afternoon, to help someone out.
Pulled out the CF cards, threw in known-good Clear card in the OS CF slot, as usual.
First screen pop up is fine, displays "America Megatrends" and various "Auto-detecting Pri-Master", memory, sizes, and Bios, etc, etc.
However, on the 2nd screen pop up, this messaged appeared and halted...>>>
UBE REVISION v0.02.01 CHECK
FOUND ONE SECONDARY KEY AT 0x0df5d9.
BIOS FLASH VALIDATION
ROM segment d800 length 8000 reloc 9000
Failed to probe the PCI base address! Error[0x2]
NOT READY TO VALIDATE PARTS. Halting.
- 
"Halting" ?!!?!?!??!

It took awhile...maybe an hour, to figure it out.

I was able to fix it and get the Clear card to finish it's Clearing procedure.

What would you do to fix it?