Hi Vladimir,
That must be really annoying! I had a similar thing happen to me today when trying to change the load factors in a load compilation. I changed the number in the table and closed the form with "OK" without first clicking the "enter" key to register my new entry. The program crashed and I couldn't use "restore from backup" as I got the same message as you. I had to start again!! I have been training Structural Engineers in the efficient use of software for several decades and the first thing I teach is to save your work regularly. It has taught me to practice what I preach!! I have my Autodesk account for ASBD set so that when a crash occurs it sends a crash report to Autodesk, so I'm hoping they will see this. I will keep you posted if I hear anything.
I notice from your screen shot that your data file is being stored in the cloud - which is good practice but I have sometimes had problems when analysing a live project from a remote data file as the data transfer of temporary files can sometimes get out of sync. I generally store my data files in the cloud but copy them to a local folder before doing any heavy analysis, and then pasting them back to the cloud manually. It may not be necessary, especially for smaller projects, but for larger jobs it definitely speeds things up and reduces data transfer problems.
Sorry I can't be of more help.
Regards
Dave Geeves.