Error Codes and Messages for ExcelDocument

Code	Message	Comments
-1	Method not implemented	The selected method is not implemented
0	Ok	The operation was successful
2	Workbook no longer valid	This happens when a workbook has been opened from a program and is manually closed by the user
3	Application no longer valid	This happens when Excel is manually closed by the user
4	Invalid template	The name of the template does not exist.
5	Invalid worksheet name	The spreadsheet does not have a worksheet with the specified name
6	Invalid font properties	The specified font or properties are wrong
7	Invalid cell value	The selected cell does not have a valid value
8	Invalid cell coordinates	The selected cell coordinates are out of range
9	Invalid file name	The selected file does not exist
10	Could not open file	The selected file could not be opened
11	Error running macro	An error occurred during the execution of the RunMacro method
12	Could not save file	The selected file could not be saved
13	Can not modify a readonly document	The selected file is readonly