I have a piping drawing that gives me a rebuild error. When I go down to the level of the the "route" and do an "edit route" followed by an "exit sketch" and a rebuild then no error is present anymore. I can then go all the way up to the top level of the drawing and as long as I don't close it I can edit and rebuild as much as needed and wanted without any errors what so ever.

However, if I dare to exit the drawing then the next time I open it I get the same error. I have looked over the routing time and time again, checked all that I could imagine, looked for anything amiss and the only thing I can find is a warning that a penetrate isn't correct although there are only 3 of them and they have no errors, don't look wrong and as stated above... if I just enter and exit the edit route command it gets all resolved. It's as if there's a tiny rebuild error in it that gets nudged the right way just by forcing it to rebuild it but it doesn't actually save the drawing in the corrected state.

Anyone have any suggestions?