Hi Colin, thanks for the heads up!

That's certainly unexpected that a Firefox add-on would cause a problem like that...

I guess it must be hooking itself into modifying the file dialog behavior in other applications.

I'm glad you found the thing that was causing it, since it tends to be pretty hard for me to figure out what is going on in situations like that.

- Michael

Hi Michael,

Well I found it by pure fluke...I'd just been using MoI to modify a file I was making & went on the net to check a reference image.
As Firefox opened the DownloadHelper came up asking if I wanted to install it's latest update...I clicked OK.

When I'd finished on the net I needed to return to MoI to modify the model...but couldn't Save As?
Tried doing a couple of different things including using MoI V1 to Save & Save As, but to no avail??
That's when it occurred to me the only change in the space of 10mins was the Addon update...a lucky find!!

regards Colin