I have tried to sort this issue out, but it does not work for a final solution. I have been having an issue - GENERAL MASSIVE CATASTROPHIC SYSTEM ERROR FAILURE - with my SDL 2015, when adding my client's multiterm, and sometimes TM is added or system does not accept it. It started with a particular project from a client and I uninstalled and reinstalled SDL versions 2011/2014/2015 from my laptop trying to sort it and I did not succeed. Client updated their multiterm and TM, but again the problem persists and I can't seem to find a solution. I have been working with large projects and am having many other problems generated by the non functioning multiterm thing. The last attempt (install CU4 and the SDL Update) recommended by Walter Blaser who was very supportive, but it did not work either.Any help, suggestions are appreciated.