OK ...I've tried searching and can't find any help.
I put the catver.ini file in my MAME directory and set the path in the mame.ini file withing Mamewah's ini folder (C:\mame\catver.ini)
I have 4 custom lists ready to add for rom lists...
I launch Mamewah and choose "All Games" and refresh the list..
Then I choose a custom list and generate filtered list...
I get filtered options like Display Clones, Year filters, BIOS filters....
But there are no custom filters like sports, driving..etc..
WHat am I doing wrong?

thanks