Since update 10.5.20 can't load older project. Please help!

Since I updated Elements from 10.5 to 10.5.20 I can no longer load older project. No problems with the ones made with Cubase already updated, but if I try to load a project started before update, Cubase close the project or close itself without warning. I already tried to disable third part plugins and my settings, but no luck. I have a bunch of .DMP files but I don’t know what to do with them…
Please help!
Thanks in advice to anyone who wil try to help me!

None reply? :frowning: None can explain what can I do with these .DMP files?

None has had same problem?