Here is a MS KB Article..
http://support.microsoft.com/default...b;en-us;271513
• You save an Excel file to a network drive where you have restricted permissions.
• You save an Excel file to a location that does not have sufficient drive space.
• The connection to the Excel file has been lost.
• There is a conflict with an antivirus software program.
• You save an Excel file that is shared.
• The 218-character path limitation has been exceeded when you save an Excel file.
• The Transition Formula Evaluation feature is turned on in Excel.
• The file was created from a template that contains embedded objects.
HTHs
MLF
