Hi Charles,

I can't answer your question, but as no one else has yet, perphaps provide a
few more details:

When you say reference - do you mean your file includes formulas with
functions contained in your addin, or, do you mean you have set a reference
in the VBE Tools references to the addin, or both.

By "Project Explorer" I assume you mean the Taskbar, and in Tools Options
View : Sow windows in Taskbar is ticked (doesn't explain your problem
though). I also assume you don't have multiple instances of Excel (see task
manager).

Regards,
Peter T


"Charles Jordan" wrote in message
om...
Hi all - I'm using Excel 2003/Windows XP.

It all seems to be working fine, but I notice that when I close the
workbook and reopen it, both its name and the name of the attendant
add-in which it references, appear *twice* in the Project Explorer.

Then if I close the file without exiting Excel, on the next reopening,
both the file and the add-in appear in the Explorer *three times*; but
if I close and exit Excel altogether, they both only appear once on
re-opening.

If I repeat the procedure of closing the file without exiting, it goes
on adding one in the Projcet Explorer.

Please can any one throw any light on this amazing behaviour. TIA
Charles