I'm having a problem opening some IGS files I just received.  I have SW2010 Standard.

Here's what happens...

I open it and I get the "The default templates are not valid...  ...do you want to continue with a blank template?"

I click "OK" and it opens but there is nothing showing.   All the parts are listed in the assembly tree but each part is empty.  It just shows a bunch of origins floating in space.

I have opened IGS files in the past and it has worked.  I also opened a single part in IGS format that I received in this same lot and it also worked.  Any ideas why the assembly IGS isn't working?

Thanks

Robert