I'm sorry, but I have no idea what you were trying to do. Please explain in detail.
We don't know what version of AE (and "CS6" or "CC 2014 latest version" isn't good enough, we'll need to know the exact version number down to the last decimal).
We don't know what OS (exact version number too on OSX and any/all service packs if you're on Windows please).
We don't know what you mean by "put the video in 1080p". Are you talking about the composition settings? Render settings? Output settings?
Help us help you.