On 02/12/2014 13:20, GS wrote:
This is nothing like enough information. The likely causes are
something along the lines of the addin isn't installed where the
version of XL you are using expects to look for it or was built with a
different version and has incompatibilities that prevent loading.

Try manually checking the location of files and the paths being
searched for addins and if necessary manually install to test it

Given that the problem doesn't occur on any other machines, I suspect
things went awry during the 're-imaging' process and Excel (or Office)
is in need of 'repair' via ControlPanel!

These sort of things can be sensitive to things that appear irrelevant
even down to the printer or graphics driver if you are out of luck. DLL
hell has largely gone away but with customisations you can never be sure
that the package doesn't include something in it that is incompatible
with some later versions (or previous versions).

I still think it is a permissions or path fault but in a corporate
environment it should be down to the IT gophers to sort it out.

Exact version numbers and patch levels of OS & XL on working systems vs
OPs system might shed some light. Otherwise try sacrificing a chicken
over the keyboard for want of anything else rational to suggest.

--
Regards,
Martin Brown