I have my stage with a background picture.

On stage left are buttons, and on stage right I have a movieclip (mc_Preview).

When the user puts his mouse over each button I would like the movieclip to move to a different frame.

the problem is when the mouse moves over a button, i see the movieclip move but then the entire stage dissappears and turns a few shades of gray.

Does this sound familiar to anyone?
Any help would be greatly appreciated!