OK, I've just started a new installation of ClrMamePro, and this is what I get :

- Unzip 'cmp306a.zip' to a new directory
- Unrar 'xerces-c_2_3_0.rar' to the same directory
- Unzip the latest 'Mame Testdrivers' datfile from your site to the 'datfiles' directory
- Unzip just the '*rc*' files from the ClrMame dats zip file from John IV's site
- Run 'cmpro.exe' from the new directory
- Load the 'MAME Test Drivers v0.74' datfile, selecting 'Default' from the list of options presented in the 'No Settings Found' screen
- When the main buttons come up, press the Profiler button
- Load the 'official mame32 cabinets' datfile, again, selecting 'Default' from the 'No Settings Found' screen

I get a message straight away now (must not have come up because I had 'Hide Common' selected in the Settings).

It says this :

The following BIOSSets aren't used by any set :

then lists the BIOS's used in the Testdriver datfile

There is no need to tell you any other settings, as this is EXACTLY the steps I followed to get the message. I never touched any settings.

There is no mention of those BIOS's in the 'j4_rc_cabinets.dat' file, and you should have the incorrect 'Misc_BIOSSets' line in the 'j4_rc_cabinets.cmp' file. (I checked this while the 'BIOSSets message' was still on the screen)

That's the best I can do! :)