I just fired up SDC to check for the next Beta (yes, I'm impatient), and I got the message 'unable to validate registration'. Of course, I go and look at my registration info on the GC2 website, and... all of my registrations are gone?!?
So I go to my mail account and get the last 'lookup serials' mail to enter the registration again. SDC tells me, 'registration successful'. Because I'm somehow doubt that, I close and restart SDC. And again, 'unable to validate registration'.
I already mailed this in to support, but I post it here again to see if maybe somebody else has the same problem. Or maybe it's related to the next Beta?
Anyway, I hope this can somehow get sorted out.
Edit: The only thing that I can think of that might have caused this was that I updated to the 1.8f inofficial patch, then went back to 1.8e in order to post the game to Metaverse. However, that WORKED, so why should the registration information get completely deleted?