LEAP Bridge Concrete files will not open after saving and coming back.

We've run into an issue where files created in the Precast/Prestressed Girder module in LEAP Bridge Concrete sometimes are not able to be opened after we save and come back to our work. We attempt to open the file and it will begin to load, then it stops and nothing happens. 

Is this a known issue? Are we perhaps saving wrong? 

Evan Jones