Well, I´m working hardly with blueprints, making more or less complex logics, but I think I found the limits of the blueprints for now.
In one of my active projects I experienced a problematic bug, I must say that all was working well before this but I started to see a problem with one mesh collision, I have a box that is hidden with collision off, and in a certain moment, I turn its collision on and unhidde it, well, it was working before, but sudently it stoped to have collision, when, the second box to become unhidde and with collision was working well, after some test I thought that the editor was buggy and restarted it, but when I closed the unreal engine 4 it took a long time to close the window (no program errors or windows errors).
My surprise was that when I started again the program, one of the blueprints got one event outdated and 1 array disconected from this event and from his functions (lenght, clear, …), even if I save it, every time I restart the UE4 I get this connections broken and the event outdated.
But that not all, I experienced that one tag that the parent class had (“Interactable”) and that was working very well before all this situation started is not inheriting on his childs!
The worst point is that I all this things were working well, before I closed the editor, and I did not modified any blueprint before close…
So, please, anyone experienced somethink similar or has any Idea? I tried to make a new blank project and migrate all my blueprints, but the problem is persistent…
Has UE4 some kind of backup code store from blueprints that I can delete to make it recompile all? some kind of cache that keeps the bugs remain?
PROBLEM HALF SOLVED ON 4.5.1
**Answerhub topic: **Blueprint nodes links break - UE4 AnswerHub
PROJECT FILES DOWNLOAD: https://drive.google.com/file/d/0B8Vq51u7WDypemlsbUhBdHNmLWc/view?usp=sharing
Alert: Note that this files have been tried to be reworked to avoid the issue, so in the original point they were made in other way
Aler2: Do not copy these files to your own project making copy/paste or your project will be infected! the issue is persistent so even if you copy a node it will start crashing