Tim,
I am not getting the error message that you are getting. I might be because you have a newer service pack installed for Revit than I do. Very often when there is a new version or update for Revit it will break something in our software that worked previously. That being said I am not getting a good model imported into RAM. I noticed that there is a Base story level in the Revit model. Did this model originate in RAM and export to Revit? I don't think further round tripping this model will be possible.