> I've never
> had these errors before.

Hehe...I heard that before ;)
"My PC is brand new ...I can't have any problems"
"All my highend 3d games work perfect. No crashes at all"

These persons found out that the ide cable was bad..or they used old chipset drivers which caused random ClrMamePro checksum errors.

I don't say you have that problem...but ClrMamePro is a lot more resource intense (a lot of memory/IDE operations) than common applications or games. And the checksum checks became faster from 3.00 to 3.02, so you do even more checks at the same time now.

I asked several people to do sha1 scans...no one reported any problems.

Well...we do some further tests...as soon as we can repeat it in any way I will recheck the routines.

What you can do is:
- try a different system
- update your chipsetdrivers (esp. when you use a VIA chipset)
- try a different HD (on a different IDE controller / with a different cable)

Maybe you should post one of these errors in detail here.
I will recheck the routines tomorrow.

Roman Scherzer
ClrMamePro