Hi ed, thanks for reporting this bug. I think it's the same one from here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=8872.1

When I investigated it, it appeared to be caused by a compiler bug but it will be fixed in the next upcoming beta which I hope to release in not too long.

- Michael

Hi Michael,

Is there a chance you could add progress bar for loading/saving files ?

I often open 50, 100, 500 MB *.STP files and loading takes long time like from 30 seconds to 4-5 minutes sometime but there is no indication that MOI is doing anything, it's just freezed while loading..

Thanks

Hi Lewis,

re:
> Is there a chance you could add progress bar for loading/saving files ?

That's something that I want to take a look at doing for v4.

- Michael