Unreal Engine Issues and Bug Tracker (UE-63725)

Description

Blueprint Projects can't make APK without compiled .so Error when packaging for Android with any Plugin Disabled. Also seeing Gradle errors if SteamVR plugin is disabled.

Setting min version to 14 or enabling bPackageDataInsideApk causes no change

Tested with Pixel XL (8.0)

Forums: https://forums.unrealengine.com/development-discussion/android-development/1519174-4-20-2-can-t-make-apk-without-compiled-so-for-all-4-20-projects

Also failed to build in Main @ CL 4329255

Steps to Reproduce

Create a new 4.20 Blueprint Project. (Optionally selecting Mobile/Scalable settings)
Save map, set to startup map in project settings
Connect an Android device and launch onto device to verify functionality
Disable a plugin and restart editor (I disabled Paper2D in my 4.20 test)
Attempt to launch on device again

Result:

LogDirectoryWatcher: Warning: Failed to begin reading directory changes for ../../../../../../Projects/AJ_GearVRso/Plugins/. Error: The system cannot find the file specified. (0x00000002)

LogPlayLevel: ====9/5/2018 1:41:17 PM====PREPARING NATIVE CODE=================================================================
LogPlayLevel: APK contains data.
LogPlayLevel: ==== Writing new GameActivity.java file to D:\Projects\AJ_GearVRso\Intermediate/Android/APK\src\com\epicgames\ue4\GameActivity.java ====
LogPlayLevel: ERROR: Can't make an APK without the compiled .so [D:\Projects\AJ_GearVRso\Binaries\Android\AJ_GearVRso-armv7-es2.so]
LogPlayLevel: (see C:\Users\User.Name\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+Program+Files+Epic+Games+UE_4.20\Log.txt for full exception trace)
LogPlayLevel: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Deploy Task, Time: 4.258451
LogPlayLevel: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error
LogSlate: FSceneViewport::OnFocusLost() reason 0

4.21 4329255 (cpp?)

LogPlayLevel: ********** BUILD COMMAND STARTED **********
LogPlayLevel: Completed Launch On Stage: Build Task, Time: 6.775941
LogPlayLevel: Running: D:\Main\Engine\Binaries\DotNET\UnrealBuildTool.exe UnrealPak Win64 Development -Project="D:\Projects\AJ_GearVRso 4.21\AJ_GearVRso.uproject" -generatemanifest -nobuilduht -xgeexport "D:\Projects\AJ_GearVRso 4.21\AJ_GearVRso.uproject" -NoUBTMakefiles -NoHotReload -log="D:\Main\Engine\Programs\AutomationTool\Saved\Logs\UBT-UnrealPak-Win6
4-Development.txt"
LogPlayLevel: ERROR: Couldn't find target rules file for target 'UnrealPak' in rules assembly 'AJ_GearVRsoModuleRules, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.
LogPlayLevel: Location: D:\Projects\AJ_GearVRso 4.21\Intermediate\Build\BuildRules\AJ_GearVRsoModuleRules.dll
LogPlayLevel: Target rules found:
LogPlayLevel: AJ_GearVRso - D:\Projects\AJ_GearVRso 4.21\Intermediate\Source\AJ_GearVRso.Target.cs
LogPlayLevel: (see D:\Main\Engine\Programs\AutomationTool\Saved\Logs\UBT-UnrealPak-Win64-Development.txt for full exception trace)
LogPlayLevel: Took 0.3869243s to run UnrealBuildTool.exe, ExitCode=5
LogPlayLevel: ERROR: UnrealBuildTool failed. See log for more details. (D:\Main\Engine\Programs\AutomationTool\Saved\Logs\UBT-UnrealPak-Win64-Development.txt)
LogPlayLevel: (see D:\Main\Engine\Programs\AutomationTool\Saved\Logs\Log.txt for full exception trace)
LogPlayLevel: AutomationTool exiting with ExitCode=5 (5)
LogPlayLevel: Completed Launch On Stage: Build Task, Time: 0.000037
LogPlayLevel: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error
LogSlate: FSceneViewport::OnFocusLost() reason 0

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Fixed

Component	UE - Platform - Mobile
Affects Versions	4.20.2, 4.21
Target Fix	4.21

Fix Commit	4496292
Main Commit	4551290
Release Commit	4496292

Created	Sep 5, 2018
Resolved	Oct 22, 2018
Updated	Sep 16, 2019

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