Invalid Activation Key...
 

I'm trying to register a new server account, and I keep getting "Invalid Activation Key", when I know the key is right, as I cut-and-pasted it from the screen it's displayed on. :P

I'm using my login server account, not forum account, cut-n-pasting the account key, filling everything out... But still getting that error.

Check for trailing spaces.

Hey, thanks Doodman! That was it. The trailing space was essentially invisible when the key was highlighted due to the last char in the key sort of concealing it.