Hi Roman,
A minor thing :
If you create a save datfile with a profile wich has been renamed, the fix-datfile keep the old name of the profile(the name of the file for the profile in 'clrmamepro\datfiles').

ok...had a look at it. It's not a bug. Fixdatfile names are created by using parts of the settings file name (cmpro's settings folder). Renaming a profile will only change the description tag in the belonging datfile (cmpro's datfile folder).