I am sure there was a large investment of time in building this very, very large model. You will not get a quick answer here based on this simple screen shot
Open a Support Request on Smart Support. Smart Support is Intergraph's support portal. The URL is
http://smartsupport.intergraph.com. All support issues and software change requests are to go through Smart Support.
Please include the job file and details regarding your exact steps to cause this response.