Sorry to bring this back to life - just a quickie.
The addin is great for single person use but I am having problems if there are multiple users using different PC's (not at the same time). The add in loads from my C Drive and when someone else loads it they have to delete out the filepath before their add in on their computer calculates it.
Is there anyway round this? Am currently having to Write Macro's for every file to manually populate the isoweeknum.