Good morning,
I'm working on a 2 span twin tub girders structure, and it works well when running Analysis for Design. But after I save the file with a different name, change mode to rating and try to run Analysis for Rating, It crashes showing the following messages.
User can save both the Design and Rating analysis in the same file by just changing the mode.
Please check the below link which explains how to save both the Design and Rating analysis.
https://communities.bentley.com/products/bridge_design___engineering/w/bridge_design_and_engineering__wiki/55258/lbs---analysis-for-both-design-and-rating
If you are still facing the issue then please email me the concerned file.