Repro Rate: 5/5

This issue was encountered in the 5.1.0 live launcher build of //UE5/Release-5.1 at CL 23058290 and reproduced by other users.

Regression tested against the 5.0.3 live launcher build of //UE5/Release-5.0 at CL 20979098 and confirmed to not be a regression since same unhandled exception found in the current 5.1.0 build is also encountered in the previous 5.0.3 build.

This was initially found with Android as the target platform but also occurred when setting Windows as the target platform.

Steps to Reproduce


  1. Download Unreal Engine 5.1.0 from the Epic Games Launcher.
  2. Create a plugin or have a plugin prepared.
  3. Open cmd in [Workspace]/Engine/Build/BatchFiles and run the following command:
RunUAT.bat BuildPlugin -StrictIncludes -Plugin=[PathToPlugin]/MyPlugin.uplugin -TargetPlatforms=Android -nop4 -ScriptDir=[Workspace]/Engine -compile -installed -unrealexe=[Workspace]/Engine/Binaries/Win64/UnrealEditor-Cmd.exe -Package=[PathToPackage]

[PathToPlugin] - Replace this with the path to the plugin.
[Workspace] - Replace this with the UE workspace directory.
[PathToPackage] - Replace this with the path to where the package should be.

Actual Result: 

ForceCompile not supported if Unreal.IsEngineInstalled() == true
Unhandled exception: One or more errors occurred. (An item with the same key has already been added. Key: C:\Program Files\Epic Games\UE_5.1\Engine\Source\Programs\AutomationTool\Android\Android.Automation.csproj)

Expected Result: Engine precompiled files for Android should be put in the following path:

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-172233 in the post.

Login to Vote

ComponentUE - Foundation - Cpp Tools - Automation Tool
Affects Versions5.0.35.1
Target Fix5.2
Fix Commit23623221
Main Commit23623221
CreatedDec 7, 2022
ResolvedJan 10, 2023
UpdatedFeb 22, 2023