UE4 doesn't build a plugin.

Development Pipeline & Plugins Plugins
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1

Hey, folks.

I’m trying to install a GitHub - midgen/UnrealFastNoise: Modular, Blueprint-friendly noise generation for UE4 to my project.
But it seems like UE4 doesn’t compile it.

The steps I’m doing:

[The path where UE4 is installed: C:\Program Files\Epic Games\UE_4.18]

  1. Cloned UnrealFastNoise repo to C:\Program Files\Epic Games\UE_4.18\Engine\Plugins\Developer\UnrealFastNoisePlugin
  2. Created a new “Basic Code” C++ Project (MyProject2)
  3. Enabled UnrealFastNoisePlugin in UE4 Editor and restarted it.
  4. UE4 Editor cannot be restarted because of: “the followin modules are missing or build with different engine version: UE4Editor-UnrealFastNoisePlugin.dll Would you like to rebuild them now?”

Selected “Yes”, another error - “MyProject2 could not be compiled. Try rebuilding from source manually”.

Infromation from log file Documents\Unreal Projects\MyProject2\Saved\Logs\MyProject2.log:

…

LogInit: Warning: Incompatible or missing module: UE4Editor-UnrealFastNoisePlugin.dll Running C:/Program Files/Epic Games/UE_4.18/Engine/Binaries/DotNET/UnrealBuildTool.exe MyProject2 Development Win64 -project="C:/Users/Rewlion/Documents/Unreal Projects/MyProject2/MyProject2.uproject" -editorrecompile -progress -NoHotReloadFromIDE Creating makefile for MyProject2 (.uproject file is newer) @progress push 5% @progress pop Target is up to date Total build time: 4,09 seconds (NoActionsToExecute executor: 0,00 seconds)

…

LogInit: Warning: Still incompatible or missing module: UE4Editor-UnrealFastNoisePlugin.dll LogExit: Preparing to exit.

  1. Tried to rebuild MyProject2 from Visual Studio 2017 : no errors ,plugin didn’t compiled (didn’t find any plugin’s *.lib)
  2. redo step 4, same result, same error, same log.

MyProject2.uproject contains: { "FileVersion": 3, "EngineAssociation": "4.18", "Category": "", "Description": "", "Modules": [ { "Name": "MyProject2", "Type": "Runtime", "LoadingPhase": "Default" } ], "Plugins": [ { "Name": "UnrealFastNoisePlugin", "Enabled": true } ] }

But, I’m able to successfully build it manually with RunUAT (C:\Program Files\Epic Games\UE_4.18\Engine\Build\BatchFiles\RunUAT.bat)

The question is - why isn’t it builded from VS2017 or from UE4 editor?

2

I am getting this exact same issue on Unreal 5 after adding a C++ class. No amount of deleting and regenerating project files stops the error from eventually returning. If I compile from VS everything works fine. In the log it even says target up to date. It’s almost as if when the target is up to date, the UBT fails, but when it’s cleaned it succeeds because it actually has to build something. It seems like the issue lies in how Unreal is trying to determine whether or not a built module is out of date, but I have found numerous threads with this exact issue and none of them seem to have a working solution outside of completely recreating your project, and even then I don’t think that’s a reliable fix. It seems like an issue with the editor.