I created an Add-In Using Excel 2003, maintained in a password-
protected project and have had many people using it without any
problems.


However, I have given it to a new user and it causes the entire Excel
application to stop functioning.

The user tells me that none of his menu bars work and the only option
he has it to close the application.

Could this be because he may be using a different version of Excel
than which I created the add-in from?
Or, something else, perhaps?

Thanks for your help.
Coby.