Crash after opening any blueprint file in Editor

UE 4 Editor crashes when I try to open any blueprint file in Editor.

That’s the message I get:
Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: Result != NULL [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Engine\Private\EdGraph\EdGraphNode.cpp] [Line: 101]

I have tried to edit 101 line in EdGraphNode (I ve commented out assert line), but crash still occurs in the same way.

Below full screenshot from Crash Reporter:

I have attached also all output log from Visual Studio during debugging[link text][2].
I think I am missing some kind of blueprint graph dependency.

Hey Xter-

Does this crash occur for newly created blueprints as well as those already in your project? Are you seeing the same thing happen in a new project when you create/open a blueprint? Does the crash happen when opening other assets (such as the material editor/particle system editor/ animation editor/etc.)? Additionally, can you post the log files from the crash as well?


Yes, crash occurs also for newly created blueprints when I try to open them for the first time. Crash occur only in my project.
Log file

Hi Xter,

Could you provide me with the project that is experiencing this issue? You can upload it here or, if it is too large for answerhub, feel free to upload to Dropbox or another 3rd party site. You can then either link it here or send the link to me in a private message on the forums (). In the meantime, do you remember what it was you had last changed when this crash started occurring?

I was getting this issue earlier today on 4.8 preview. I had to delete the duplicated blueprint assets under TempContent/Backup.

I cant unfortunately, lots of confidential stuff.

I have no TempContent folder. Backup folder is already empty

It seems like a lot of the problems in the log are that it is having problems finding or opening windows files that are part of system32. A common cause for this is the program not being run as administrator. Could this be the case? I’m still looking through the log and looking for possible solutions, this is just the first thing that came to mind.

This project has full administrator rights

This may seem completely unrelated but can you try making a copy of your project? In the new copy, open the project and delete all of the content from the content browser (Except engine content of course) and then try making a new blueprint and seeing what happens? You may have to do it in chunks as deleting a large amount may cause a crash.

Done. Project crashes after deleting first chunk. Here is a log []Log file1

I’ve looked into the issue after reproducing it and it looks as though the issue has been fixed in a future internal build, although this is so recent that we haven’t had a chance to verify the fix as of yet. In the meantime, I don’t really have a workaround for you but I will be resolving this issue. I will get back to you as soon as I can verify that the problem has been fixed.

Have a nice day