Hi Andrew,
would you be able to confirm at all the license had been working? Also verify eth0 and the change in drives did not do anything. Ie is permissions or communication between the two a problem here.
I would also be sure to physically remove the other/old licenses.
What exact ccs version are you using? Have you been using Help->Code Composer Studio licensing information ... and "launch license setup" in the upgrade tab to try and set/go between your licenses?
One thing to try if you are able, is removing your installation and doing a full fresh installation of v5.5 which is the latest. Upgrading ccs has caused known issues and some older versions have had a bit of a licensing problem I believe limited to generating some of the free versions though.
Best Regards,
Lisa