Squeezebox Issue

I know some of you have or have had Squeezeboxes, tried googling but came up with nothing hope someone here can help:

For some strange reason my players now show "album artist" instead of "artist", I tried rescanning the library which didn't help and I've now upgraded to LMS 7.9.3 just in case but that hasn't fixed it either.

Artist shows correctly in the Web Interface, iPeng and Softsqueeze.

Hmm, always had album artist set as Various on compilations without issue till now. Removing album artist has fixed this but just very strange.