It was fine last time. But today, when i tried opening a video file using WMP (Windows Media Player) It pops up an error box, saying WMP has encountered a problem and needs to close. I do not know what is going on, because last time i could open them, but today I cant. My error signature is Error signature AppName: wmplayer.exe AppVer: 11.0.5721.5145 ModName: unknown ModVer: 0.0.0.0 Offset: 00000000 The weird thing is that not all video files could not be opened. I need desperate help, hope someone could help me.