Motorola KRZR K1m

I've tried reformatting my SD card because when I copy music and photos onto it- only one photo can be viewed in the folder at a time. Everytime I take out the card and put it back in, it's a different photo- yet only one! Even though I have many mp3's in the music folder on the card, only one track appears on the phone menu as well.

Has anyone else had issues like this??
Also, now when I try to start the music application I get "Error M508: Application Error. An error has occurred. Please try again later."

This is really irritating. The manual does not have trouble-shooting information. Thanks in advance for your help / advice!!!