When I try to register - it says "unable to do so at this time" I have tried this multiple times, on multiple days. The program has been uninstalled, and reinstalled, also reboot of computer. It just won't let me register, and hence not able to even get to the 'look for updates'. I realize this is an older version. I do have 11 - I just don't like it :)
It may be that that older version needs to "phone home" to register and it's just too old for that. I don't know. I suggest you email Mark at firstname.lastname@example.org and explain the problem to him. He's the only one who can address this issue.