What version of After Effects? Have you installed the recent updates ( http://adobe.ly/lsrkmJ )? What operating system? Has this ever worked before?
What codec are you exporting with? Does this happen with all exports to QuickTime, or just exports using a specific codec?
Same error occured last week Suddenly i reinstalled quicktime 7.7.1 then it didn't face any problem. But yesterday im getting the same error. It is happening only in Quicktime Format.
Version: After Effects CS 5.5 (Recently installed)
OS: Windows 7 Professional
Codec: Animation Codec
Your AE version may have been recently installed, but is it FULLY UPDATED? If it isn't, you need to do it.
Does it happen if you render a Quicktime with the PNG codec?
No.. It happens on all Codec.
What happens if you create a brand new project and a brand new composition, put a solid in it and render it out with no footage or other assets in your project?
Also, have you installed any third-party codecs like k-lite?
No i didnt install any codec. Then i tried what you suggest me with solid, I am getting same error. Even i reinstalled AE once.
When you uninstalled and reinstalled, did you use the CS Cleaner tool from Adobe?
It sounds like something is wrong with your Quicktime. Have you tried removing it and reinstalling?
And, just to be sure, exactly what version number is your After Effects? Is it 10.5.1?