MobileDeviceInterface.csproj. Project file not found using Custom Launch Profiles


I’m using UE 4.12.5 and build my project (only blueprint) for iOS on a PC in development mode (by the book)

  • I’m able to build the project using the project launcher :

  • But NOT able to build using Custom Launch Profiles with the same parameters, I got this error
    message :


Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Unabled to build Project C:/Program Files/Unreal Engine/4.12\Engine\Source\Programs\IOS\MobileDeviceInterface\MobileDeviceInterface.csproj. Project file not found.

May be I’ve missed something ?
If someone could helps ?
Thanks in advance for your help :slight_smile:
Best Regards


  • Could you please upload your full error output logs as a .txt file for me?
  • Are you able to package by using File > Package?
  • If not, could I see those logs too?B

Documentation Links:

  • [Unreal Frontend][1]
  • [iOS Quick Start][2]
  • [Packaging and Cooking Games][3]


Using the Unreal Frontend Tool | Unreal Engine 5.1 Documentation
[2]: Setting Up an Unreal Engine Project for iOS | Unreal Engine 5.1 Documentation
[3]: Packaging and Cooking Games in Unreal Engine | Unreal Engine 5.1 Documentation

Hi ,

  • Here is the Project Launcher (Custom Launch Profile) Logs
  • Yes Packaging by using File>Package works fine :slight_smile:

[link text][1]

Thank you

98535-projectlauncher.log (2.26 KB)

Sadly the logs do not provide me enough information. It does say that the project file is not found. Are you telling it to package for that specific project when you’re in UFE? Could you show me screenshots of your set up, so I too can try to package the exact same way you are?

Thank you.

Finally I decided to build my project on a Mac via rsync, using the UE4 source on GitHub I’m now able to build the project with custom launch profile.

Thanks for your help
Best regards

You’re welcome! Have a great day!

This happened to me after I removed the InstalledBuild.txt from Engine/Build. I dont know if it has something to do with the problem but it got fixted after I restored it.