Unknown Cook Failure

Hi!
I have very serious problem. I cannot package project. Everything worked fine two months ago. Now I got rid off all package errors that I found after this time.
I had removed all maps and lefted only startup menu map.
I’ve checked many advices about Unknown Cook Failure from forum but with no results.
I’ve run out of ideas. This is quite big c++ project, so migrating content to another project isn’t solution, becouse that would be a mess to changing project name in all classes to new project name.

This my log. I know that it’s full of warnings, but this shouldn’t be a problem … I thing so. What shoul I do? If some one have some idea - please help.

P.S.
I’ve checked all blueprints in project by “Refresh All nodes” and all of them are right. I deleted Saved, Intermediate and Binaries folders. I recreated VS projects files and of course compile mode is set to Development Editor.

I’ve found this in log. Maybe this is a clue?
LogDerivedDataCache:Display: Failed to cache data. Maximum cache size reached. CurrentSize 524272 kb / MaxSize: 524288 kb

I found it. It was double bind to the same overlap function in parent and child class.