Romcenter 4 support discussion. Please do not post roms requests or illegal links, posts will be deleted. After discussion in this forum, please report any new bugs here.
A couple of things you could check, if you feel like it.
You have a mame XXX version database, in which the CHDs appear as correct in RC 3.71. Create the same mame version database in RC4 and check if indeed the CHDs appear as red in RC4. If they do, then check the CRC of a CHD in both RC versions to see if a different CRC is reported or if it is the same CRC but falsely reported as red in RC4. This could help Eric pinpoint the error.