I have purchased this in the past on version 2013, now it is asking me to pay for it in 2014. I have a full academic license, is there a place I can download it for free?
You can find the current version for download on ni.com/downloads by searching for MathScript:
Currently I see both the 2013 and the 2014 versions available, but this will change both in time and based on if a serial number is connected to your account.
If the module is already on your serial number for 2014 then it should activate normally!