I've installed DDO before on my computer and had no problems with it. I recently uninstalled because I wasn't playing it that much and am now returning to play with some friends, however every time I try to boot the launcher to log in I get an error message.
System.ArgumentException: The path is not of a legal form. at System.IO.Path.nGetFullPathHelper(String path,Char invalidPathChars, Char whitespaceChars, ChardirectorySeparator, Char altDirectorySeporator, Char volumeSeparactor, Boolean fullcheck, String&newPath)
at System.IO.Path.FixupPath(String path)
at System.IO.Path.GetDirectoryName(String path)
at com.turbine.launcher.Launcher.RegisterPatchWrapper ()
at com.turbine.launcher.Launcher.Initialize()
at com.turbine.launcher.Launcher.fadeInOrOut()
at System.Windowns.Forms.Control.Invoke.MarshaledCall backs()