Hey!
Seemingly randomly received the following error. The second time I tried, the game worked again but after that I keep receiving this error.
Thank you for answering!
I am not sure how to post the stack, but I uploaded the part of the output log on imgur: http://imgur.com/a/mjOsS
Does this help?
Thannk you for your input, this definitely helped my a ton!
Hi,
this assertion means that your project code is trying to read the first element in an empty array.
Without the full call stack we won’t be able to help you find where the bad data read comes from.
Cø
According to the log you are running the AutomationTool for cooking or Staging your game and it crashes the RenderingThread, it looks like you are using a broken asset that fails cooking / building and ends up crashing the cooker.
Unfortunately i won’t be able to help you further.
Hope these information helped.
Cø
Great news you found out which asset was breaking the cook process 
This definitely looks like a bug, you should give the crashing asset to Epic so they could give it a look 
SOLUTION: The error was caused by…blur. The new UMG blur component in a widget blueprint caused my game to crash. I simply removed the blur component and everything worked.
Thanks for the support! I will definitely alert Epic.
Hi Par0l,
Could you provide a little more information about this issue? What are you trying to do when this crash occurs? Does it only occur when you have added Background Blur to a specific UMG widget, or does this occur if you add it to any widget? Could you provide the most recent full log file from your project’s Saved folder?
Sorry for the delayed answer. I hope the log is of any help. link text
The problem occurred when I transferred my project to my new computer. Everything worked on my laptop, I copied the same project and received that error whenever I PIE’d. If I recall correctly, it was caused by that single blur in one of my widget blueprints. Simply removing the blur fixed the issue. Currently however, the Blur component does not seem to work with the same Widget after I re-added it. The game does not crash anymore, but the blur does not render?