After doing a system restore to fix a different problem, I now have a new one, I restored my computer to 5/11 and now when curse starts up it gets the following error:
Curse Client v4 could not be started, due to a corrupt or missing DLL. Please note that Curse Client v4 must be launched via its shortcut in the Windows start menu or desktop.
The following error was reported:
Could not load file or assembly 'sorttbls.nlp' or one of its dependencies. The system cannot find the file specified.