I just purchased Sins via tg.net, and while the game downloaded OK and seems to work, every time stardock central updates, I get now the error message "Failed to validate your sin, sose registration information", and a suggestion to update my email address and serial number.

I went into the register product dialog and put in the serial # from the email, and verified that the email address is correct. It says the product is registered successfully, but I still get the error, even after several attempts.

Any way to fix this?

Thanks!