Re: Error, cannot patch!
My advice would be to un-install what you have downloaded so far, including the TDM itself, and download one of the two Full Client options. TDM tends to be pretty buggy.
The only drawback to going with the full client download instead of the TDM is that you won't be able to play right away till the full download is done and installed, but since TDM is buggy for you, you're not playing right away anyway.
New Player? Check out this chart for Quest Pack access for different accounts/purchases. [URL]http://forums.lotro.com/showthread.php?427692-LotRO-Account-Quest-Pack-Access-Chart&p=5778210#post5778210[/URL]
German version here: [URL]http://forums.lotro.com/showthread.php?429055-HdRO-chart[/URL]