Your output panel says something about almost 10000 pixels width... That can't be right and inevitably that's probably the point of failure - most CoDecs, especialyl legacy AVI and Quicktime have resolution or fiel size limits. Based on the crooked values I would say that you are trying to render the whole map rather than actually a properly sized output comp...
Thanks very much for your help, so the video works now after I reduced the pixel size.
However a new issue has arisen....when I play the video it shows the whole map rather than the zoomed in section that is required for the animation (picture in previous comment). Do you have any ideas on how I can change it, so the video plays with the zoomed in part of the map fixed for the duration of the video? I'm completely new to After Effects so sorry if its a basic question.
Your help is much appreciated.
Drop the map comp into a suitably sized output comp. No offense, but it might be a good idea to actually read the AE help and learn about basic concepts like pre-composing.