I'm having an issue with Quicktime Version 10.1 whenever i load a video of anykind MOV. AVI. WMV. whatever it load up just fine, but when i press play it plays then it stops, so i press play again and it stops again the cycle continues i can't seem to get it to just play the movies. I can click through them and see the parts but when i press play it plays not even a second then automatically pauses. Help would be appriciated.
I had the same exact problem. Been dealing with it for about 2 hours now. Almost downgraded to an earlier version of Quicktime, but here's what I found instead:
Check if you have a DivX codec installed. Apparently there's a problem with DivX being compatible with Quicktime on Lion. If you do have a Divx; uninstall it.
I uninstalled divx and installed Perian and it's working just fine for me now. Hopefully that works and you won't have to completely re-install the operating system. If DivX isn't the problem, then I'm not sure what to tell you.