I wonder if someone could please help here.

We have a user who has started experiencing printing problems from Outlook. All of a sudden when he clicks on the Print icon or File, Print a dialog box appears saying "The Command Is Not Available At This Time". He has to close Outlook (and we close Word too) and then when he re-opens Outlook and clicks on the Print icon, it works. Any ideas why it prints one moment and then doesn't work the next? This problem has only started recently.

The user is on NT4.0 SP6a and is using Outlook 98/Exchange 5.5/Internet Explorer 6.

Can anyone help?