Not me, I have been using it for a while now, and it hasnt given me any problems. Try checking the settings, I have found that sometimes I have had to tweak them slightly. Might be a codec issue, try free-codecs()com. There are some there that might help. If that doesnt fix your problem, then go to SourceForge()net and go through the help and/or the discussion forums, you will most likely get some tips and help there. Anytime I have had trouble playing a file with media player classic its either been a bad file or a setting issue, either way I have been able to fix the problem relatively quickly.