Since last week. It always says the server was unable to complete the registration as requested. Just tried DVDA 5.2 and it works fine. I can't complete the registration online either, same error. No chat support until Monday so I figured I'd see if it was just me having the issue.
Just tried that. It asks for my e-mail, I enter it, then it says I'm registering Vegas 10 Pro & shows my SN, click next (or whatever) and it takes me to the web registration page & says there is an error.