If you are getting this error in Version 7.0 when selecting Module Preferences, then this is a Version 7.0 error ONLY when WinFax Pro Version 10.0 is installed. Seems that WinFax Pro is writing to the registry incorrectly and thus conflicted with the change to the new printer setup tab. The current workaround is to uninstall the WinFax Pro drivers. We have corrected this error and can distribute it to you by way of CD as it affects every executable. Please let your Account Executive know that you would like the correction now or can wait for Version 7.0A.