I have installed the educational version of Nastran and it accepted my code and serial. It returned a message that the program installed successfully. When I launch the program I get the following error - Autodesk Nastran closing due to an invalid licesnse. I want to mention the program was installed into a non-default file path. D:\Program Files\Autodesk\Nastran 2015 What can I do to get this working. I have already tried uninstalling and reinstalling but I continue to get the same error.
Typically, Nastran licenses (commercial site), should be a network version. You will need to setup a license server as noted here:
http://upandready.typepad.com/up_and_ready/2011/11/quick-start-setting-up-a-license-server.html
Then you need to install Nastran as a network version.