I have the same problem I think. Downloaded 2015 today, and when I ran GrimeFighter it doesn't recognize my purchased and valid license. If I check on my licenses it says it is there, but just wants me to purchase another one. I can't find the original license key amongst everything else I have. This sucks.......
I tried following the software support in the software. It said to get to the screen that wants me to purchase software I already own. Click on "Do you already own this software" at the bottom. Then I am supposed to put in my email address and password, then GrimeFighte will work. Well, there Is no place to type in that information. Very frustrating. I really need this to be working.
Dana