SOLVED! (I do not see how to edit the thread title?) Suddenly after a few weeks of enjoying ADAC GT Masters 2014 and a few months of enjoying the S3 demo cars/tracks the game is asking that I create an account to play the game (free content and ADAC) after hitting the START button on the steam page. I have downloaded and bought everything through steam. edit I did not copy the message down, but it says something to effect of "all DLC content is tied to your steam account....blah blah blah" If I see it tomorrow I will be careful and copy down entire message. I have the impression the steam game suddenly thinks I got everything from non-steam site? I downloaded and bought everything through steam (downloaded game in Sept/Oct 2014, purchased and have been playing ADAC since around Christmas 2014), internet is fine, system is fine, game file integrity check-thingummy is fine. Game has always worked fine until this afternoon. It sounds like the S3 login info needs to be reentered since it disappeared from my computer or steam account. Tired and late here, I give up for today. thanks for the help, Mr. Goodwin!