We just installed Revit Structure 2013 Friday. I'm new to Revit so I wanted to look at sample project. I clicked on the simple project & I get this message: An error has occurred while drawing contents of this window. This drawing shall be closed. If I pick a drawing from the "views box" I get the same message. I have a hard time believing this. I can't think of anything more basic than this. Any help would be greatly appreciated.