Unable to start program : "C/../4.8/Engine/Intermediate/Build/Unused/Project_name.exe"

anonymous_user_f4b1a256 · June 11, 2015, 7:21pm

Hi,

I just installed the 4.8 Version of unreal and tried recompile it with VS 2013 and I get the above error :

“Unable to start program: ‘C\Program Files\Epic Games\4.8\Engine\Intermediate\Build\Unused\Project_name.exe’'”

The system cannot fint the file specified.

I did what I think was enough to put the project up to date, going to the .uproject, right click on it and go for “Switch Unreal version” > 4.8 And "Generate Visual studio projects files.

On the other hand I’m perfectly able to launch the game via the Epic Games app / hub

hubacek.jakub · June 12, 2015, 8:54am

I was able get rid of this error message by clearing solution.
In Visual Stuido Build → Clear Solution.
Did this help ?

hubacek.jakub · June 12, 2015, 11:18am

Did you also rebuild the solution after that ?

anonymous_user_f4b1a256 · June 12, 2015, 11:17am

Nop that changes nothing :S

anonymous_user_f4b1a256 · June 12, 2015, 11:21am

Yeah the build succes but when I compile and run (F5) I still get the error

zaha · June 13, 2015, 8:45am

I had the same problem. I noticed that a rebuild was happening almost instantly and saw this message in the output window:

“Win32 is not a supported platform for ProgrammingTutorialEditor. Valid platforms are Win64, Mac, Linux.”

So I checked and saw that my Build Configuration was “DebugGame Editor” and “Win32”. When I switched to “Win64” it worked again.

hubacek.jakub · June 13, 2015, 8:46am

This worked for also for me, I forget the “change to Win64” step.

anonymous_user_f4b1a256 · June 14, 2015, 6:50am

Yes that was it thanks !

RogueRocket · July 23, 2015, 10:21pm

I had a slightly different variation on this, wanted to post it in case it saves anybody time. dumb i missed it for so long.

Somehow my GAME project became deselected as the startup project ,and the UE4 engine project because selected. This apparently does not work at all. I had to re-set my game project as startup project
(Right click it in solution explorer->Set Startup Project)

anonymous_user_2fe7a106 · July 30, 2015, 12:32pm

While this fixes the issue, the supported platforms include Windows 32bit, so this is only a workaround. How can someone build for 32bit?

Bob_Gneu · September 6, 2015, 9:31pm

This happened to me again in moving to 4.9. Thanks for getting it written down and searchable.

thepenguinmaster · September 10, 2015, 1:42pm

I ran into this problem as well when moving to 4.9. Your solution saved me a lot of time. Thanks!

polymatheddy · September 13, 2015, 9:15pm

Thank you for this! should be added as a valid answer, saved me time <3

anonymous_user_fbe5155f · September 14, 2015, 2:57am

Just to clarify, in VS2013, right click the game project name → Set as Startup Project. Often gets reset to the engine after engine upgrade…

Troublesum · September 19, 2015, 12:40am

Thanks, how many times am I going to fall for this

_neo · August 28, 2016, 4:26pm

Right click on your project in the Solution Explorer and select “Set as startup project”

Bob_Ironthighs · September 14, 2016, 4:12am

This is the right answer! Thank you, neo! I didn’t realize my project wasn’t the startup project!

Aericks · September 18, 2016, 12:16am

Just upgraded from 4.12.5 to 4.13.0 and this was the solution, if anybody was wondering.

Phenicks · September 19, 2016, 9:53pm

You da real MVP

Napoleonite · October 17, 2016, 11:19am

This also worked for me. After the upgrade to 4.13 this was suddenly required for me.