Hello,
so we are working on an Unreal Engine Project. (Version 4.5.1)
When we change something in one of our blueprints from our current project, save, compile, close and open it we get this error: Screenshot - 644b510a046523bcefed8166cc97728a - Gyazo
Its on every change in one of our blueprints we are doing.
This blueprint got 5 different graph nodes with much content.
But the changes we did to try it out, were changes that normally cant be the reason for a crash.
Its for example adding a new print node, than its crashing.
Would be cool if someone could help us 
Cheers,
Hey -
To help determine the cause of the crash there are a few questions I have.
Does this crash happen when editing any other blueprints in your project or only the one with the numerous graphs?
Does this crash happen when editing a blueprint in a new project?
Additionally, could you post the logs from the crash as well? The following link details where inside the project folder the logs are located. If you could also supply the blueprint that is causing the crash we can determine if the asset itself is corrupted.
Cheers
Hey , here is the errorlog: http://codeviewer.org/view/code:4c0e
And its only crashing in this big blueprint with the numerous graphs and its not crashing when we edit a blueprint in new projects. Its only in this blueprint.
Can you tell me your email adress please, that I can send you the blueprint via email.
Cheers,
The easiest way for me to accept the blueprint would be to upload the asset to dropbox and then send me a private message on the forums with a link to it.
Do you got my private message?
Hey -
I received your private message and during my first attempt at testing I found that the 4.5.1 project I created would crash when I tried to open the blueprint. I didn’t have the crash happen when I tried using the blueprint in a 4.6.1 or a 4.7 preview 5 project. If you have a copy of your project can you try opening it in a different engine version and see if your crash occurs then?
Cheers
Hey , i tried it with the version 4.6.1 and its crashing too.
Are there any other things we can do?
Cheers,
Hey -
When attempting to open the blueprint in the 4.7 preview as well as an internal build on my machine I receive a warning that the variables “Killed By” “Hit By” “Slots” “Guns” and “Explosives” have an invalid type before opening correctly. It is likely that the type is specific to your project however something about these variables may be causing the crash. Whatever is causing the crash in 4.5.1 and 4.6.1 seems fixed for 4.7 however. If you have a previous version of the blueprint that does open you can try looking at the listed variables. Also you could try creating a backup copy or your project for the 4.7 preview to work there temporarily.