Tryed to fix a problem - made even bigger problem

So I moved “Intermediate and Saved” folders somewhere else, then tryed to package (I though it would solve different problem with packaging - error cs0101), after I find out it would not solve the cs0101 error, I move the two folders (Intermediate and Saved) back to the “Unreal Projects > My Project” Folder. I had to overwrite files doing this thing… and then i Tryed to run the Project again… then it showed error: "The following modules are missing or build with a different engine version: UE4Editor-Project.dll… Then I rebuild them… and while it rebuild… it showed another error: “Project could not be compiled. Try rebuilding from source manually.” Then i Tryed to rebuild from source… (from folder)… didn’t work as well.

I fixed both problems by creating new project and copying “content” folder from old project to new project.