Hi,
I try to send a REVIT 2013 model to CBS, it works fine but when I want to sync back my model into REVIT (for example I change sections in CBS and I want to sync the new sections into REVIT) I have the following error :
'object reference not set to an instance of an object'
I tried not to change anything in the model before sync to see but it doesn't solve the error.
Thanks in advance if you have any idea