I have a problem playing some video files after upgrade to 33.0.13, all play fine on 32.0.58 (and many versions for several years before that). The audio is fine but there is no video, just a black screen. On some videos the video flashes up briefly when I hit Play and again on Stop, but only for a fraction of a second. It is the same on two different W11 PCs. I haven't tried all video files by any means but the ones that don't work so far are all m2ts with vc-1 video coding. However, other files with the same format work just fine. I can't see any pattern with bitrate, file size, etc. I don't see any video settings that should effect this but settings on MC33 are the same as on MC32 anyway. I have uninstalled and reinstalled Media Center but no help. Would appreciate any help.