Instant crash when opening blueprint after 4.17.1

Hello

I’m facing hard problem from few days. Firstly I check my possible errors or bad assets, but finally I’m 99.9% sure is something different or wrong with engine after 4.17.1 maybe, 4.17.

I have project with custom inventory system, but freely based on skyrim inventory tutorial and I have problem with blueprint posted here http://shootertutorial.com/2015/12/15/complete-skyrim-like-inventory-tutorial/

This is ItemWorldActor blueprint containing Construct Object From Class. Here goes graph:

Problem is hard to catch. This tutorial was for v4.10, but I had it worked on 4.15 and 4.16 without any problems. “Game” working even now, however, I can’t edit this blueprint. Every time when I’m trying to edit it, editor crashing. I tried recreating this blueprint from scratch, removing all old files, but when I’m using posted script - it again crashing. I check also all connected files, map etc - mostly replaced with new ones and old ones was removed - to be sure.

I can open any other blueprint. No errors on project load nor saving, closing.

Please help