When you load the model in the SketchUp Plugin, is it crashing there, or do you mean that even after re-saving in SketchUp you still get a crash in the measures tab in the stand alone OpenStudio application?

There is normally a directory next to your OSM file with the same name as your OSM file. I'm wondering if something correupted within that directory. Try this.

1. Quit SketchUp and any OpenStudio applications
2. Rename the directory so if it is "MyModel" call it "MyModel_temp"
3. Launch the OpenStudio Application and see if you still see the RTTI error.

OpenStudio will re-create a clean copy of that directory when you open and re-save the OS. You will have to re-link the weather file, and re-add any measures. If this is the issue, then we may have you send us a zip of the OSM file and the bad directory so we can see why that happened.