I've tried the suggested fixes. 1) ToolsOptionsGeneral uncheck "Ignore
other Applications". This at least lets me open the file, but first Excel
tries to find a filename comprised of each name in the path. E.g. It tries
to find "C:\Documents.xls" and I get an error message "file not found." I
click ok and it tries to find the next word in the path - e.g. "and.xls."
This continues until the path is exhausted and Excel finally finds the file.

I've also tried making the desktop my default location by 1)
ToolsOptionsGeneral then entering the desktop path in the default location
box.

I've also tried 1) StartRun "excel.exe /unregserver"(no quotes)OK.
2) StartRun "excel.exe /regserver"(no quotes)OK.

Did not help. I've also designated the full path to excel.exe.
I typed
StartRun "C:\Program Files\Microsoft Office\OFFICE11\excel.exe /unregserver
and then
StartRun "C:\Program Files\Microsoft Office\OFFICE11\excel.exe /regserver


That failed too. Can anyone help? Thanks.
--
lawrence