hello, I have had a similar problem.

in my case the issue was that excel not using the correct version of the
..net framework.

I have resolved adding the text file excel.exe.config in the office folder
with the following rows
<configuration
<startup
<supportedRuntime version= " v2.0.50727 "/
</startup
</configuration

"Torben Laursen" wrote:

I have A COM add-in for Excel 2003 that is beeing used without any problems
on a number of computers.

However one of my customers cannot get it to work.
When he tryes to call one of the UDF in the COM he get the error: #NAME.

The COM seens to be installed correct. It addes a menu to Excel and he can
use the winforms that are in the COM.
Also there is no disabled items in Excel (Under Hep/About/Disabled items)
So everything seems to work except the user defined functions inside the COM

Can anyone give me any hints about how I solve this problem?

Thanks
Torben