UE4 crash on startup

Development Platform & Builds
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1

I have installed UE4 on linux, as per the instructions given here: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums but the launcher crashes at 71% initialization with the error “0 from an array of size 0”. It has launched when the computer was connected to the internet.

2

Hey thisflyingtrain-

You say that the editor has launched when connected to the internet. Does that mean that you’re only seeing this error when the computer is not connected to the internet? Can you provide any additional information that will help me investigate this issue? What version of the engine do you have installed? At what point in the install process did you see this message? Let me know if there anything else you can add.

Cheers

3

[2016.03.20-20.50.46:810][ 0]LogSlate: Could not find file for Slate resource: …/…/…/Engine/Content/Editor/Slate/Common/Selection_16x.png
[2016.03.20-20.50.48:332][ 0]LogUdpMessaging: Initializing bridge on interface 0.0.0.0:0 to multicast group 230.0.0.1:6666.
[2016.03.20-20.50.48:332][ 0]FUdpSocketBuilder: Failed to subscribe UdpMessageMulticastSocket to multicast group 230.0.0.1
[2016.03.20-20.50.48:332][ 0]LogSockets:Warning: Unhandled socket error! Error Code: 19
Assertion failed: 0 [File:/home/x/Downloads/UnrealEngine-release/Engine/Source/Runtime/Sockets/Private/BSDSockets/SocketSubsystemBSD.cpp] [Line: 213]

[2016.03.20-20.50.48:332][  0]LogLinux:Error: appError called: Assertion failed: Assertion failed: 0 [File:/home/x/Downloads/UnrealEngine-release/Engine/Source/Runtime/Sockets/Private/BSDSockets/SocketSubsystemBSD.cpp] [Line: 213]                                                                                                                                


Signal 11 caught.

That’s the error I get when not connected to the internet.

[2016.03.20-20.48.59:765][  0]LogSlate: Could not find file for Slate resource: ../../../Engine/Content/Editor/Slate/Common/Selection_16x.png
[2016.03.20-20.49.01:287][  0]LogUdpMessaging: Initializing bridge on interface 0.0.0.0:0 to multicast group 230.0.0.1:6666.
[2016.03.20-20.49.02:077][  0]SourceControl: Info Source control is disabled
[2016.03.20-20.49.02:077][  0]SourceControl: Info Source control is disabled
[2016.03.20-20.49.02:505][  0]SourceControl: Info Source control is disabled
[2016.03.20-20.49.02:891][  0]LogDesktopPlatform: DesktopPlatformLinux

But here, it works when connected to the internet.

4

I can fix this problem, and get UE4 working at all, by deleting all the files that relate to the udp messenger plugin, but now lightmass won’t build lighting.

5

Just to confirm, you are only seeing this error when the computer is not connected to the internet when launching the editor, is that correct? Do you also have this crash if you open the project directly from the .uproject file? Can you explain what error you’re getting when trying to build lighting? When building the editor, did you include “make UnrealLightmass” as part of the build process?

6

(1)- Yes, I am only seeing this error when not connected to the internet.
(2)- Since I am on linux, I don’t know how to open from the .uproject file.
(3)- I don’t get an error when building lighting, and in fact it says that it was completed successfully, but on play, it still says lighting needs to be built.
(4)- I did include “make UnrealLightmass”, but it wouldn’t make without UDP messenger.

7

There is a known issue with building lighting on Linux when the internet connection is missing (UE-18201). It sounds as though you were able to fix the original issue of the crash on open. If you are still having problems with opening the editor, please provide any information that would help me investigate or reproduce the problem locally. If you continue to have issues with lighting, creating a new post to track each issue separately would be best.

Cheers