I downloaded clrmamepro (3.85) for the first time and, after downloading the "titles" dat file from the clrmamepro web site and adding my rompath, I tried to scan the 150 or so ROMS that I have that are missing files or have some other problems (mostly missing files) and got the following error: "The following not empty rompaths don't contain any valid sets: [directory path to ROMS] Either you selected wrong paths or all sets have wrong names. Recheck your settings or enable at least 'set' + 'name' check."

I know the rompath is correct, I verfied that at least a few of the ROM names are in the "titles" dat file, and I have everything checked for the "check" and "fix" columns in the scan settings.

The ROMS in question are standard Winzip files that I haven't altered in any way. What am I doing wrong?