I've recently upgraded from Quark 5.0 to 5.01 and am working with Quark 4.0 files. When I open a 4.0 file in 5.01, I am able to view and edit the file without any problems. When I go to save it as either a 4.0 or 5.0 gile, it gives me the message "File Structure Damaged [-40]". it created a Quark file on my PC but when i open it, it says the file is corrupt. Can anyone help me with thie error?