Can a GAP analysis be performed with TOW? Sample problems in the GAP manual are for static analyses only - not TOW. I have an existing analysis without GAP elements which runs successfully, but introduction of compression only GAP elements into my SACINP inertia file does not work.
This error usually occurs when you have unstable structure or insufficient supports. If your error still persist, you may like to create a service ticket and attach your SACS files. You can do this from Bentley.com > SELECTservices > Service Request
Just checkout these Gap Analysis Templates to see whether you have what you want. There are many use-case scenario based gap analysis in the post to be used free.
I've voted your answer down because the Gap Analysis that is discussed in this thread relates specifically to solving a contact type mechanical problem (not a business type problem).