Stuart
No other ESRI software on this machine, the system and event logs contain a warning but not an error, not record of simular errors in the MS knowlege base. And I actually disabled printing in the AGX configuration just in case there was an issue with the default printer (I cannot get far enough in AGX to see which printer the app is pointing to). This is really frustrating, corporately we are currently running AGX on 10 machines, the only one I am having problems is this R400.
Lyle