In Open studio 1.5.0 I keep getting an error "An unhandled exception has occurred. Access violation - no RTTI data!" when trying to navagate to the measures tab. Anyone know why this is happening? It doesn not occurr in all of my models. I noticed that the measures disappeared from the folders but I copied the files back in from the previous version of the model. I've tried to reload through sketchup but the error still crashes the program. I don't want to lose all my work! Help!