Try the usual fix for this.

ToolsOptionsGeneral Uncheck "Ignore Other Applications"

If no joy with that................

Close Excel first and On the Windows Taskbar

1) StartRun "excel.exe /unregserver"(no quotes)OK.
2) StartRun "excel.exe /regserver"(no quotes)OK.

See the space between exe and /regserver

You might have to designate a full path to excel.exe.

In that case StartRun "C:\yourpath\excel.exe" /regserver(quotes
required)OK.


Gord Dibben MS Excel MVP


On Wed, 15 Oct 2008 09:45:03 -0700, Evilive138
wrote:

This has just become a problem recently, I have never had this happen in the
years I have used Excel. I am getting "file cannot be opened, it is
corrupted" meesages ALOT lately when I try to open excel e-mail attachments.
No one else has problems with the files. Is there a cache or file I need to
clear out? Why is this happening all of a sudden? Any help appreciated.
Thanks.