Not sure if there is a difference with the Academic version or not, but there are a couple of things you can look at if nothing else works:
1 - Move the contents of these folders to the trash and reboot (note - I suggest you just try moving any Aperture related folders / files first).
/Library/Caches
/System/Library/Caches
/Users/<youruser>/Library/Caches
Also, move the following folders to the desktop:
/Library/Application Support/Aperture
~/Library/Application Support/Aperture
These are both empty folders to start with and will be recreated when you load Aperture again. They both are used to hold Plug-Ins and the one in your Home folder contains different setting files that are created when you make settings in Aperture.
If this sorts the issue, then you can restore any of the 'Plug-Ins' as needed, the rest of the files can be deleted as Aperture will recreate those.
2 - If that does not help, then back when my username was 'CorkyO', I posted two rather long-winded comments at the link below concerning removing all trace of Aperture and then reinstalling (in this case it was for AP2):
http://discussions.apple.com/thread.jspa?messageID=11110145
One of the main points is running the Terminal command to view hidden files / folders and gain access to: '/private/var/db/receipts' and removing any files related to Aperture. This combined with the rest of the procedures should remove all trace of Aperture and allow you to start from scratch.
Note - the procedures in #2 are only recommended if you have a system backup and have exhausted all other 'easier' options to resolve the problem. Since your problem seems to be Aperture related only, the removal of Aperture cache and support folders may resolve the issue.
Good luck and remember to backup first. 😉