For the last few minutes, I have been trying to rename some freshly ripped tracks with tag.exe and tagging frontend. When I click "GO" after choosing "rename from tag" the file name changes from "Track01.ape" to ".ape"!!!!!

Whats going on here

Please help!!!!

Some fields of the tags must have wrong information. This can happen if the artist has numbers in his name, i.e. "50 Cent", or similar oddities.