Hi
You just need to delete a few files to sort this out.
If you go to
‘(Hard Drive Name):Users:(User Name):Library:Preferences:Graphisoft:’ you should see something like this(below)
Select any file with ‘prefs’ at the end (in my case, ‘55436.prefs’, ‘Disabled Plotter Prefs’, and ‘Plotter Prefs’) and Trash them.
Empty the trash and start/restart ArchiCAD
This method won't trash ArchiCAD or anything like that, but it will reset the settings in your 'Print' and 'Plot' options.
Josh Osborne - Central Innovation
Mac Mini