Exporting my animation doesn't export the camera movements

Hi,

I have been trying to export a shot I am working on for my college project, but when I try it doesn't export the camera movements in the shot. I've tried 3 times, and have triple checked on all occasions that my advanced layers option is on- it is. I looked on the forums and found that exporting as a video and then encoding in media encoder solves this problem, however this is the way I have always exported and it usually works fine. I even exported a shot 15minutes using this method, that had camera movements and they all exported fine but for some reason this shot wont.  What could be the problem? 

NOTE: The below error message appears while the file exports.

And when i render the file (ctrl enter) i see this error

Thanks in advance