Enigma Gold starforce issue.

After installing it. the game will fail with the Starforce check. It will take up to six tries before it will accept it and run.When it sticks it will ask for the serial code ( Which didn't come with my gold edition. Tried the one listed with Dreamcatcher on another post. No go.).I have SH3 and Soldiers HOWW2
and don't have any problems with Starforce with them. E-mailed Starforce with no answer. Anyone aware of a fix?. I suspect it has something to do with using a DVD drive but not for certain. Thanks.