XBMC MKV – Green Video

I recently installed XBMC on my living room server in order to better supply my 1080p TV with downloaded media. Upon trying to play an MKV x264 movie, I was presented with an all green screen but the video’s proper audio. It turns out that this was caused by enabling hardware acceleration, which was found under Settings->Video->Playback. I disabled hardware acceleration (which actually is the default settings; I had enabled it last night, thinking “why not”), and the video plays just fine, now.