OK, browsing some more here, I found this trick (Admin, how can I link this to the original thread from Stephen Valentine ?) :
"Open Excel go to File > Options > Add-ins > Manage: COM Add-in
Here you should see the Excalibur add-in and it should be active. deselect it and hit OK
It will then be removed from your Home tab. Go back and do the same process and re-activate it. It should be back on your Home tab.
After I did that I was able to login and it worked."
That worked for my colleague too. Problem solved
;-)
Hugo
