I never save through SketchUp and only open it up through the open studio "open file" plug in. I then go to edit it through the open studio application and then save it. I then open it back up in sketch up through the open studio plug in and the whole building turns white. I also save backups/iterations which also have all turned white as well. I am currently using the "30-day trial" could this be something to do with it? Any suggestions much appreciated.