Expressing format

Hello all

I am wondering if you can assist.

Having created a nice database users lots of forms and formulae's, I have finally got to the end of testing before dishing out to various teams the database to collect data.

Data being so different, I used this forum for lots of niggles and issues (that's everyone!!). Now that I rolled this out to one person, we instantly are encountering new issues and I think it is derived down to their version of Excel, or some optional plugins which I thought I would run by you guys first.

Basically, I am using the format expression to ensure the data is recorded in the format that I want. However using Excel 2010, I now have the Compile Error. 'Cant find project or library', does anyone know what the issue is here as it works beautifully on my computer, but nobody else's which defeats the purpose!

Thanks
Michael