Error re-opening file LEAP Bridge Superstructure


I need to run a flared girder analysis with two different beam types on the same span. I have been able to do this for a while without any issues, but now any new model I make with different beam types will give me an error when I re-open it, and all data and settings I entered into the model are cleared. Any idea how to fix this? I am using V19.02.00.33 due to project requirements, so I can't upgrade to a newer version to fix the problem. I've been able to recreate this issue multiple times, and a colleague had the same issue when trying to open the file.