We have around 50 users here that work from home via a Microsoft terminal server and in the office on Microsoft PowerPoint 2003 presentations. Lately we have had about 10 users getting corrupt Powerpoint files AFTER they had worked on the file via the terminal server the night before. I think this is related to them working on the file remotely but have no idea how this could be caused. The most frequent error appears when trying to edit data behind charts 'The server application, source file, or item can't be found, or returned an unknown error. You may need to reinstall the server application'.
I've researched the error and found it on Microsofts website but they implicate Norton Antivirus as the culprit. We do not have and AV software on the Terminal server or the fileserver where the files is stored so I have to rule this out. Does anyone have any ideas?