I got a custom weapon that shoots pickable projectiles but when I try to pick it up, it's not signed as the projectile name but weapon name. For example - I got a rocket launcher that shoots tin cans. When I try to pick up the throwed tin can, it's signed as "Rocket Launcher" and not "Tin Can".

Firstly, I tried to make a weapon similar to Rock-It Launcher from Fallout 3 (the throwable items were not an ammunition but miscellaneous objects) but for some reason it doesn't work - when I point my cursor over the weapon in PipBoy, the game crashes.

Any help is kindly welcomed...

Hey, I'm only getting started on scripting, but why don't you just duplicate the Coin Shot script (12GaugeCoinShotScript)?

I was planning on using it for thrown knives in a weapons set I'm creating and I guess it can be adapted to most other weapons to return a specific set of items with a chance to spawn some on each use - but I have never tried or tested it yet.

edit: Reread your post, and I noticed I'm probably not helping a lot.
You probably want a chance to return whichever Item you fired with the Rock-It Launcher and I have absolutely no idea if that is implemented as a Weapon that uses different types of ammo and projectiles or if it behaves in an entirely differnt way.
I guess if you have a form for each type of possible projectile you could attach an individual script to each that will spawn the item fired, but again, just guesswork. I'm sorry.

e2: Typos