Error Closes Unsaved Documents

My user is getting an intermittent error after creating an item in MS Office 2000 Professional in either an e-mail message, a Word doc or an Excel spreadsheet stated as: “This program cannot be closed. If it is being debugged, please resume it or close the debugger first.” When she clicks OK, the unsaved item closes is lost and must be re-created. I tried to replicate the problem, but it didn’t happen for me. We are running MS Office as a published application through a Citrix desktop, ver. 8.0. This user has a workstation with Windows 2K OS. Some users are using WYSE terminals. Ten minutes later she called the helpdesk again and was seeing the same error while trying to update an existing spreadsheet.

Any assistance would be appreciated. Thanks.