Problem deleting MusicMatch Playlists

The default playlist files in Windows Explorer for MusicMatch weren't handled
correctly, and this is what I got when searching for them:

"This XML file does not have STYLE information associated with it -
Document tree is shown .... "

I can *read* that file, but assume I cannot delete from it, because it is not
formatted correctly.

MusicMatch's forum doesn't cover what to do in this instance... only where to
find the files, if everything worked *correctly*. The files were not where the
instructions said they would be, and not handled correctly I assume, because MM
expects everyone to use IE, which they do heavily.

Has anyone else run into this or know what I should do to correct this? I'll
check Google meanwhile, and see what I can find. I hope I hope I don't have to
reinstall, using Internet Explorer. Thanks for any assistance/ideas.
bj