Resource string not found

[Aanoch_Terrel]

I had played DDO for a while, but took it off this computer due to hard-drive space. I downloaded and installed the game, but now every time I try to play it I get this error message in a new window:

Resource for string "GuestWarning.Text" could not be found.

at system.environment.GetStackTrace(Exception e)
at system.environment.GetStackTrace(Exception e)
at system.environment.get_StackTrace0
at com.turbine.launcher.Launcher.GetResxString(String token)
at com.turbine.launcher.Launcher.DetectGuestUser0
at com.turbine.launcher.Launcher.Main0

Any suggestions on how to fix this?