Try this:
1. open a fresh, clean workbook
2. select all the cells
3. Edit > Clear > Formats
Then try to set a format

Signature
Gary''s Student - gsnu200745
> When clicking on the format cell option on one of our computers, it
> immediately closes Excel out with an error stating that excel.exe has
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>
> Thanks.
Polk Nursery Co., Inc. - 26 Sep 2007 14:46 GMT
I just tried that and it still gives me the error when I try to select
Format>cells.
Any other thoughts?
Mindy
> Try this:
> 1. open a fresh, clean workbook
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> >
> > Thanks.
Gord Dibben - 26 Sep 2007 16:11 GMT
Try this trick which most times clears up the problem.
Close Excel, do a file search for *.XLB
Rename it to *.XLBOLD......ignore the warning.
Re-open Excel and a workbook.
Does the problem still exist?
Gord Dibben MS Excel MVP
>I just tried that and it still gives me the error when I try to select
>Format>cells.
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>> >
>> > Thanks.
Polk Nursery Co., Inc. - 26 Sep 2007 18:34 GMT
Thanks Gord. I tried the search on the offending pc and it does not locate a
file with that name.
Mindy
> Try this trick which most times clears up the problem.
>
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> >> >
> >> > Thanks.
Peo Sjoblom - 26 Sep 2007 18:54 GMT
It's a hidden file, make sure you have hidden files included in the search
(more advanced options in windows xp)

Signature
Regards,
Peo Sjoblom
> Thanks Gord. I tried the search on the offending pc and it does not
> locate a
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>> >> >
>> >> > Thanks.
Polk Nursery Co., Inc. - 26 Sep 2007 19:04 GMT
This computer is running Windows 2000. I do not see a hidden file option. I
did this search on another of our computers running the same version of
Windows and it did come up with 4 files by the name of Excel.XLB when I did
the search. That computer doesn't have any issues with Excel.
> It's a hidden file, make sure you have hidden files included in the search
> (more advanced options in windows xp)
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> >> >> >
> >> >> > Thanks.
Gord Dibben - 26 Sep 2007 19:49 GMT
Your *.xlb file will be named Excel9.xlb and is usually found in
C:\Documents and Settings\username\Application Data\Microsoft\Excel
Gord
>This computer is running Windows 2000. I do not see a hidden file option. I
>did this search on another of our computers running the same version of
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>> >> >> >
>> >> >> > Thanks.
Polk Nursery Co., Inc. - 26 Sep 2007 20:04 GMT
Still no luck finding the file on that computer. Could this be part of the
problem?
> Your *.xlb file will be named Excel9.xlb and is usually found in
>
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> >> >> >> >
> >> >> >> > Thanks.
Gord Dibben - 26 Sep 2007 20:42 GMT
Excel will always create a *.XLB file if none exists.
It is the default file where Toolbar and menus setups are stored.
If you delete it, Excel will build a new one.
You "must" have one on your computer if you open and close Excel even once.
I have never used Windows 2000 but when you open My Computer and go to
Tools>Folder Options>View you should find an option button for "show hidden
files and folders"
Gord
>Still no luck finding the file on that computer. Could this be part of the
>problem?
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>> >> >> >> >
>> >> >> >> > Thanks.
Polk Nursery Co., Inc. - 27 Sep 2007 13:32 GMT
Found the file. Tried the renaming. Still got the error when I opened Excel
and asked for it to format.
Mindy
> Excel will always create a *.XLB file if none exists.
>
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> >> >> >> >> >
> >> >> >> >> > Thanks.
Gord Dibben - 27 Sep 2007 16:40 GMT
You are running Windows 2000.
Which version of Excel?
If 2000 or earlier have a look at this KB Article
XL: Illegal Operation Error When You Attempt to Format Cells
http://support.microsoft.com/kb/285347/en-us
Gord
>Found the file. Tried the renaming. Still got the error when I opened Excel
>and asked for it to format.
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>> >> >> >> >> >
>> >> >> >> >> > Thanks.