Windows Media Player pop up message that won't stop appearing

[Burnt]

everytime I try to play a video file on my laptop, it gives me this error "this version testing date is expired", I have tried WMP 6.4, 9.0 beta and even winamp 3 beta. It always gives me that pop up, but still allows me to play the video. It sucks cause I can't queue stuff in a playlist and play stuff randomly. Anyone know how to fix this?