Hello, this is my first time asking this community about something.
Welcome to the community!
For a fairly technical issue like this, it would really help to have more information. We don't know what version of AE you're running (and we would need to know the actual version number down to the last decimal, so, for instance, at home I'm running 184.108.40.206). We don't know what OS you're running. Etc.
I'm running Adobe After Effects CS6 Version 11.0 on Windows 8.
You should be on 11.0.4
Also, the rest of the info in the link I gave you would help.
You need to provide exact system info, exact comp and render settings and even the exact error message. Just throwing us truncated errors and crumbs of info is not really useful.