Hi , I somehow managed to open the project in 4.5.1 (editor crashes when I right click the file in Content Browser 99%of the times) and proceeded to migrate the file. Here is the project Link. I confirm that it still crashes when I try to launch the editor with this new project. The file I assume is causing the problem is in Content\Blueprints\MangoBlueprints\
It is named MyCharacter.