When we open the history of a file, and click 'View', we get the attached error. I've checked and added the file types and path to eDrawings, under User, Settings, Viewers (surprising there wasn't any viewers listed), and removed the spaces as recommended in another post, but it doesn't change the message. Right clicking a file and choosing view does open it in eDrawings, just the 'View' in history doesn't work. The message shows it is looking for the file on C: drive, this isn't correct, can the path to historical files be set? Could it be wrong?