Editor crashes when building lighting

Development Rendering
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1

Branch: Binary from launcher

Build version: 4.0.1. -2027741

Repro Steps:

  1. Picking any sample level or building my own
  2. Choosing to build lights - Imgur: The magic of the Internet
  3. Editors crashes every time when swarm agent is right before second seperator - Imgur: The magic of the Internet

Happens no matter what level or lighting settings (quality) I choose.

All the dlls, that crash log talks about, are there, UE4Editor-Core.dll, UE4Editor-Engine.dll etc.

Used to have UE4 installed in default installation folder in program files, had the same issue, so reinstalled to second drive. Still the same.
Crash log - https://dl.dropboxusercontent.com/u/2711056/testProjectLights.log

Specs: Windows 8 x64, Intel i5 3570k, 8Gb DDR3 RAM, ATI HD6790 video

2

Hi tomaac,

Have you ensured that your video card drivers are up to date?

3

Yes. Beta drivers didn`t help either.

4

Found the problem and a solution.
Apparently editor crashes on building level if your Windows user folder contains characters other than latin. I had latvian “ī” in user folder name and UE4 crash logs just skipped that character in paths.
Changed project directory to somewhere else and now everything`s fine and I can build lighting.

5

Thank you for identifying the issue, we have logged a report for this and will look into addressing it.