Try turning Auto Update option off in the Game Options > Settings. Quit, then relaunch and see if the Repair option is there.As of this morning my client isn't updating when I launch the launcher and I am now getting this message [eng] You've attempted to use an invalid or outdated client. Please exit and update your client using the patcher. My launcher doesn't have a repair option, and I can't figure out how to manually update my client.
I had the same error but I was able to resolve it by forcing the launcher to Check for updates (click on Game Options drop down menu which is right about where the news appears).
As of this morning my client isn't updating when I launch the launcher and I am now getting this message [eng] You've attempted to use an invalid or outdated client. Please exit and update your client using the patcher. My launcher doesn't have a repair option, and I can't figure out how to manually update my client.