Can't build lighting after patch 4.0.2

I don’t know why but since the patch, I can’t build lightning in my scene anymore. It start calculating it but it stays at 0% for a few second and then it disapears a few seconds later without making any changes in the scene.

Am I the only one having this issue? Poor soul in need of help

Hi ,

Is this occurring in a blank project with the default map or does it occur only in a particular project? Thank you!

Hello , thank you for your answr

As far as I know, It only hapen when I open something from this project

link text

as for the logs there are 10 diferente textlogs file in the logs folder, it’s probably a stupid question but which one do you need?

I uploaded the latest one, let me know if it isn’t the one you need.link text

Hi ,

Try to create a new level in this project. Then in the blank level build the lighting and let me know if it allows you to do that or if it gives you the same error. Thank you!

Hi ,

Yes it does let me build the lightning in a new scene in this project.

Hi ,

If you could follow these steps to produce the specific log we need and post it here it may help us to determine what is going on:

  1. Open your project on the level with the lighting issues.
  2. Go under the build drop down menu - select “build lighting only”
  3. Once this finishes (or quits), go to Documents>Unreal Projects>YourProjectName>Saved>logs.
  4. Go to the very first log.txt on the list (it should be the most recent one), and send me that log.

We want to compare this to your other log as well as ours to see what may be occurring. Thank you!

hi,

here it islink text

Thanks again for the help, really appreciate.

Hi,

Yes,I followed the steps as you told me to. Build drop down menu > build lightning only. Nothing happend

Hi ,

Do you get any different results if you use a small LightmassImportanceVolume in the level?

Hi ,

I just tried and it had no results. It still try to build lightning but it stays stuck at 0% and then disapear without making any changes whatsoever to the scene.

Hello,

I found the reason why it I couldn’t build light. Basicaly I created and worked on this project on another account from this PC ( which still exist but somehow is unstable because of firefox ) so I started working on the admin account of this computer, more stable but unfortunatly unable to build light. So I logged on the other account again and I tried building light on it and everything worked fine.

Do you have any idea why the admin account can’t build light and the normal account can?

Hi ,

Unfortunately I am not aware of any reason this would occur. I am happy to hear you found the issue and are able to continue working, however the admin should be able to access all information present on the PC. I will try to find an answer to this and if I do manage to find one I’ll get back to you on it. However I am marking this question as answered for tracking purposes. Thank you and have a great day!