Hi macropod and thanks again for your help with this...

Yes you are correct, the template the document points to is macro-enabled. I found a macro to build the path for the file as Word does not have a native function for this without appending the filename too (we wanted to separate them out). I also force this to run on doc open using the AutoOpen macro.

So I wonder is it the macro or is it the fact that the template is inaccessible?

Auto-update doc styles is off.