Problem with PCG after resetting engine

Hello! I don’t know if it’s normal but my PCG Graph (or system?) stops generating buildings (like on screenshot) after resetting the engine. When I change anything, they vanish and no more are generating. It works again only when I recreate all the blueprints and graphs from scratch

Was using this tutorial: https://www.youtube.com/watch?v=6yTw9zHrr68

Don’t know what to do about it ;_; It has happend 3 times already

Files I have problems with:

BP_CopyPoints.uasset (45.6 KB)

PCG_CopyPoint1.uasset (541.4 KB)

BPCG_CopyPoints.uasset (175.6 KB)

One of the meshes I made for this:

SM_1Door500x400.uasset (28.9 KB)