Thanks, Tom. I googled around and found where (I think) you had told someone else the same thing. I thought I had edited my original post to reflect that, but it didn't stick, apparently.
When I pointed to the ROMSET folder with the 005.zip in it, everything worked fine. I was a bit concerned that the mame version could be a problem, but it was not an issue.
Great data set - thanks again.
downloaded fine, but I get an "invalid ROM path" error every time I press "Go!". My romset is updated to .189, and the folder I'm pointing to only has the specific games I want in GameEx. OS is Windows 7 Ultimate. All the Roms have been checked/cleared and launch fine using rocketlauncher.
Would appreciate any ideas at all.