File changed on disk message showing repeatedly

There is a message that informs me that the file I am looking at in Mockups has been changed on disk, and asks me whether I want to reload the file and accept changes.

From the forum, I see that this is deliberate - to allow you to see when someone else updates the file you're working on. In my situation though, it's only me. I am saving the files to a network location though, so I'm *guessing* that the time on the network drive is perhaps different that that on my local machine? Not sure - but I get this message literally every time I switch to a mockup tab - and I know for a fact that the files have not been changed: or if they have, it is not by someone else using Mockups.

Might it be possible to suppress this message? Or set that I always want to reload from disk, for instance. The message is driving me nuts!