I am trying to ensure that all the users of a workbook are all using the same version as there are 10+ versions out there which look similar and do similar things but slightly different results and no joy asking people to just use the new version.

I was thinking that something along the lines of a bit of code that compares a version number in the code with a number in a specific cell of a workbook on a shared drive and if they dont match a message box saying to use the current version then close the workbook.

Can anybody point me in the right direction?

Regards

Adrian