Are you upgrading to a new version of this CC? If so, delete the paladin.cs file. I had the same issue, the file changed to Convalesce.cs.
To be safe, remove any and all files and folders in the CustomClasses folder, then extract the contents into CustomClasses.
Did all of that.. I even deleted my entire CC folder, and removed all CC's from any folder within the folder that holds HB2... It shows as Convalesce.cs but still no luck... Ill keep trying and let you know