Editors crashes on opening a series of blueprints

Everything used to be fine and suddenly the editor crashed and since then we can not get a stable version of all our blueprints compiled. We are in a very crucial stage with the game and have been trying to figure this out since a few days.
I have included the crash report and one of the affected blueprints.
Would be great if someone could look into this.

Thx!

Crash report attachments

Hello Worldofpolygons,

After taking a look at the information provided I was able to find that this is a known issue. I have provided a link to the public tracker. Please feel free to use the link provided for future updates.

Link: Unreal Engine Issues and Bug Tracker (UE-39558)

Make it a great day