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How to compile lightmass?

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  • replied
    I build the ue4.24.3 from the github source code with the Development Editor option .I have the same problem and compile the
    UnrealLightmass.It works.

    Leave a comment:


  • replied
    Just for info: Using VS2017 with source built UE4.21.2, found UnrealLightmass module, and building it resolved the error. Thanks!

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  • replied
    I'm having this same issue and the UnrealLightmass file isn't showing up in VS2017. Someone wanna give me a hand?

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  • replied
    Originally posted by Kontur View Post
    Do you build the engine from source? If so, you have to recompile the Lightmass module (as the error suggests).

    EDIT:
    Open the engine solution in Visual Studio and search for UnrealLightmass, then right click: build.
    [ATTACH=CONFIG]146371[/ATTACH]
    this worked for me when i had a light build failed to kick off compile light mass error. thank you!

    Leave a comment:


  • replied
    Originally posted by Loucou View Post
    Bcs of copyright Infringement... GitHub has removed UE4 every links.
    No they haven't?

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  • replied
    Bcs of copyright Infringement... GitHub has removed UE4 every links.

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  • replied
    Originally posted by Kontur View Post
    Do you build the engine from source? If so, you have to recompile the Lightmass module (as the error suggests).

    EDIT:
    Open the engine solution in Visual Studio and search for UnrealLightmass, then right click: build.
    It doesn't show up when i search for it. I already verified the engine. I got it from the launcher. It did work yesterday and now it doesnt :l

    EDIT: A mesh was causing the problem. Reimplementing it helped out
    Last edited by Danjio; 08-10-2017, 07:55 AM.

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  • replied
    FYI, Development Editor worked.

    I was going to try that next, but needed a point where I could waste an hour or so building.

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  • replied
    Ok do you tr to make a new clean intallation maybe ?
    And try maybe with Development Editor instead ?

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  • replied
    Originally posted by EkstraReality View Post
    Do you download your UE4 from the launcher or github ?
    Github and built whole source.

    I'm running as Debug Editor if that matters.
    Last edited by Slayer9292; 07-04-2017, 02:00 AM.

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  • replied
    Do you download your UE4 from the launcher or github ?

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  • replied
    I get this same error (doesn't matter what level I try to build, even the default "blank one" with just a floor.)

    I rebuilt Unreal Lightmass a half dozen times now, restarted PC, and nothing seems to work.

    I've also tried everything in the forum post about steps to fix Swarm not starting.

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  • replied
    Do you build the engine from source? If so, you have to recompile the Lightmass module (as the error suggests).

    EDIT:
    Open the engine solution in Visual Studio and search for UnrealLightmass, then right click: build.
    Click image for larger version

Name:	LightmassRebuild.jpg
Views:	1
Size:	285.9 KB
ID:	1130259
    Last edited by Kontur; 06-26-2017, 09:42 AM.

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  • started a topic How to compile lightmass?

    How to compile lightmass?

    Hello everytime I am trying to build my light, it comes an error called: " Lightning build failed. Swarm failed to kick off. Compile Unreal Lightmass. " Can you help me how I can change this?
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