I’m having an odd problem, and I’m not sure how to get to the bottom of it.
I have a project I made in UE4.15.
It’s a pretty small project consisting of just a few scene components and an actor, but every time I try to compile it and the compile fails, I get the waitmutex 5 error.
If I fix the compiler error, I will continue to get the waitmutex 5 error.
The solution to this is to destroy the intermediate and regenerate the solution and compile again with success.
Has anybody encountered anything like this before?
What troubleshooting steps should I take?
Here is an example of compile output for a failed compile:
1>------ Build started: Project: UE4, Configuration: BuiltWithUnrealBuildTool Win32 ------
2>------ Build started: Project: UserAnalysisToolkit, Configuration: Development_Editor x64 ------
2> Compiling game modules for hot reload
2> Performing 3 actions (4 in parallel)
2> UserViewAnalyser.cpp
2> [2/3] Link UE4Editor-UserAnalysisToolkit-8307.dll
2> [3/3] Link UE4Editor-UserAnalysisToolkit-2424.lib
2> Creating library C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-UserAnalysisToolkit-8307.lib and object C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-UserAnalysisToolkit-8307.exp
2> Creating library C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-UserAnalysisToolkit-8307.suppressed.lib and object C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-UserAnalysisToolkit-8307.suppressed.exp
2>ERROR : UBT error : Failed to produce item: C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-UserAnalysisToolkit-2424.lib
2> Total build time: 4.88 seconds (Local executor: 0.00 seconds)
2>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.MakeFile.Targets(41,5): error MSB3075: The command ""C:\Program Files\Epic Games\UE_4.15\Engine\Build\BatchFiles\Build.bat" UserAnalysisToolkitEditor Win64 Development "C:\Users\calem\Documents\Unreal Projects\UserAnalysisToolkit\UserAnalysisToolkit.uproject" -waitmutex" exited with code 5. Please verify that you have sufficient rights to run this command.
========== Build: 1 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========