Editor play mode crash&unable to launch

Hello!

When I enter playmode. everything is fine… and then I press left-click, which automatically shuts the playmode down. I try to launch, it works! very slowly, but it works… then I shut it down, and “launch” has grayed out. I try to save “save for following objects was not complete: blueprint:myCharacter; blueprint: bullet_blueprint” (or something along those lines). Here is screenshots of those 2 blueprints:
(or areas of them wihch are directly or indirectly launching actions based on LMB)

(oops, looks like I created a self replicateing actor. I’ll keep this here, so people with the same problem can browse this, and fix themselves)

Do not create objects that include the line “spawn child actor component: self” or anything with similar effect!