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Troubleshooting

Editor hangs after hitting Play

This is most probably happening because CARLA is started in server mode. Check in your CarlaSettings.ini file ("./Unreal/CarlaUE4/Config/CarlaSettings.ini") and set

[CARLA/Server]
UseNetworking=false

Very low FPS in editor when not in focus

UE4 Editor goes to a low performance mode when out of focus. It can be disabled in the editor preferences. Go to "Edit->Editor Preferences->Performance" and disable the "Use Less CPU When in Background" option.

Fatal error: file '/usr/include/linux/version.h' has been modified since the precompiled header

This happens from time to time due to Linux updates. It is possible to force a rebuild of all the project files with

$ cd Unreal/CarlaUE4/
$ make CarlaUE4Editor ARGS=-clean
$ make CarlaUE4Editor

Setup.sh fails to download content

It is possible to skip the download step by passing the -s argument to the setup script

$ ./Setup.sh -s

Bear in mind that if you do so, you are supposed to manually download and extract the content package yourself, check out the last output of the Setup.sh for instructions or run

$ ./Update.sh -s

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