I am constantly getting this error. My copy of Maya from my student edition that is 2012 version, and I use and Macbook. And evey few days Maya will crash saying my license has some how expired and that I can't reactivate it, so eventualy I will need to contact customer support, and they will send me a new code to reactivate. A few days again later, rinse wash, repeat.. Does anyone happen to know how to fix this? Or is this just something I will have to deal with?
How old is your Student Serial number? Those student licenses only last 3 years after which you would need to request a new one.
Assuming the SN is less than 3 years old I would suspect the problem is a corruption of the .tsf file that stores your activation information. Deleting and recreating those files may resolved the issue. Here are the instructions below for that.
First enable view of hidden files if you have not already(http://windows.microsoft.com/en-us/windows7/show-hidden-files). Navigate to the below directory
XP: C:\Documents and Settings\All Users\Application Data\FLEXnet
Windows 8/Windows 7: C:\ProgramData\FLEXnet
Find files with a name similar to this: adskflex_00691b00_tsf the important thing is that it begins with the adskflex. Delete those file. Please note once you do this all Autodesk standalone licenses will need to be reactivated.
Here's an article on how to delete the activation files on the Mac OS.
http://upandready.typepad.com/up_and_ready/2013/02/reset-standalone-licensing-on-the-mac.html