I got this strange problem with Quicktime -> H.264 codec in After Effect CC on Windows 7 64 bit.
The problem is that I can't create mov that is in 1920x1080. After about 30 frames rendered the AE crash with information like "Can't access the file". It's also after clean Windows 7 install. If the output is smaller like 1280x720 everything is OK.
I think thats might be something with files privileges, I have been rendering to different locations but didn't help.
Did You have similar troubles? Any ideas?
Thanks in advance!