"Blank Project" Errors/Warnings Due to Substance and PuzzleBP Reference

Hello Epic Staff,

Here’s an interesting issue that’s easily replicated.

  1. Launch “Epic Launcher”
  2. Press “Launch Unreal Engine 4.14.1” button
  3. Click “New Project” tab.
  4. Select “Blank” under the Blueprint tab.
  5. Set to Mobile/Tablet, Scalable 3D or 2D, No Starter Content. Enter any name for the project.
  6. File > Save Current As… > [Map Name]. Click Save.
  7. Build.
  8. Plug in any android phone or tablet.
  9. Select Launch > Target your Android phone or tablet device.
  10. Launch Fails. Filter Errors/Warnings in Error log.

“LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogUObjectGlobals:Warning: Failed to find object ‘Class /Game/PuzzleBP/PuzzleOverview.PuzzleOverview_C’
LogInit:Warning: CVar named ‘r.MobileHDR’ marked up in RendererSettings was not found or is set to read-only
LogUObjectGlobals:Warning: Failed to find object ‘Class None.’
LogUnrealEdEngine:Warning: Unable to use cook in editor because r.MobileHDR from Engine ini doesn’t match console value r.MobileHDR
LogUnrealEdEngine:Warning: Unable to use cook in editor because r.MobileHDR from Engine ini doesn’t match console value r.MobileHDR
PackagingResults:Error: Error Launch failed! Unknown Error”

Why would a blank project be targeting the PuzzleBP project?

So I fixed this issue by going into my Plugins and disabling the Substance plugin. However, there’s nothing that tells me that’s the cause of the issue, I just happened to disable it and that solved it. Might want to change error handling or disable Substance plugin on Mobile/Tablet projects.

I restart my project, try to launch again and it deploys to my Android device fine, but the warnings about PuzzleBP are still present.

“LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogUObjectGlobals:Warning: Failed to find object ‘Class /Game/PuzzleBP/PuzzleOverview.PuzzleOverview_C’
LogDirectoryWatcher:Warning: Failed to begin reading directory changes for …/…/…/…/…/…/Users/Element/Documents/Unreal Projects/MyProject/Plugins/. Error: The system cannot find the file specified. (0x00000002)
LogUObjectGlobals:Warning: Failed to find object ‘Class None.’
LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogLinker:Warning: Can’t find file ‘/Game/PuzzleBP/PuzzleOverview’
LogUObjectGlobals:Warning: Failed to find object ‘Object /Game/PuzzleBP/PuzzleOverview.PuzzleOverview_C’
LogRedirectors:Warning: String Asset Reference ‘/Game/PuzzleBP/PuzzleOverview.PuzzleOverview_C’ was not found! (Referencer ‘None’)
LogTexture:Warning: Building texture with an invalid GUID: /Engine/Transient.Texture2D_1
LogTexture:Warning: Texture has no source mips: /Engine/Transient.Texture2D_1
LogTexture:Warning: Building texture with an invalid GUID: /Engine/Transient.Texture2D_0
LogTexture:Warning: Texture has no source mips: /Engine/Transient.Texture2D_0
LogTexture:Warning: Texture has no source mips: /Engine/Transient.Texture2D_1
LogTexture:Warning: Texture has no source mips: /Engine/Transient.Texture2D_0”

Is this supposed to be present for a blank project? Thank you for your time!

Hi Element,

Substance Plugin does not support mobile as far as I’m aware. You’ll want to take that point up on Allegorithmics website. Last I saw posted was this: Mobile launching and substance plug in - Mobile - Epic Developer Community Forums

We currently have a similar issue reported in our ticketing system. Unreal Engine Issues and Bug Tracker (UE-25402)

Since these are just warnings they can be ignored, especially if these are just files that aren’t of any consequence to your project.

-Tim