Problem in Full Screen Mode

[lastdodo]

I have been useing BS Player for a few months with no problem. However, I recently started having a problem whenevr I put it it Full Screen mode.

When I switch to Full Screen(F), the audio continues to play, but the video is just bands of color. However, if I hit (M), it fixes itself. I assume this is some sort of settings issue? How do I fix this so that I don't have to hit (F+M) every time I want to watch a movie?

What exactly does (M) do? It says "Movie Mode", and it seems to do somethign with the spacing of the movie (ie bars at top and bottom), but I can't find any other info.