Getting an error message "FPSGame" Module can't be found make sure it exists and is compiled

Development Programming & Scripting
1

Been following programming tutorials and started getting this message when I change the code. I created a FPSGameMode class, added the BeginPlay overwritten function and tried to compile got the following in output:

1>------ Build started: Project: FPSProject, Configuration: Development_Editor x64 ------
1>  Parsing headers for FPSProjectEditor
1>  Code generation finished for FPSProjectEditor and took 2.739
1>  FPSGameMode.cpp
1>  link.exe UE4Editor-FPSProject.dll
1>     Creating library C:\Users\Leon\Documents\Unreal Projects\FPSProject\Intermediate\Build\Win64\FPSProjectEditor\Development\UE4Editor-FPSProject.lib and object C:\Users\Leon\Documents\Unreal Projects\FPSProject\Intermediate\Build\Win64\FPSProjectEditor\Development\UE4Editor-FPSProject.exp
1>FPSGameMode.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl AFPSGameMode::BeginPlay(void)" (?BeginPlay@AFPSGameMode@@UEAAXXZ)
1>C:\Users\Leon\Documents\Unreal Projects\FPSProject\Binaries\Win64\UE4Editor-FPSProject.dll : fatal error LNK1120: 1 unresolved externals
1>  -------- End Detailed Actions Stats -----------------------------------------------------------
1>ERROR : UBT error : Failed to produce item: C:\Users\Leon\Documents\Unreal Projects\FPSProject\Binaries\Win64\UE4Editor-FPSProject.dll
1>  Cumulative action seconds (4 processors): 0.00 building projects, 0.20 compiling, 0.00 creating app bundles, 0.00 generating debug info, 0.10 linking, 0.00 other
1>  UBT execution time: 6.18 seconds
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets(38,5): error MSB3073: The command "F:\Unreal4\4.0\Engine\Build\BatchFiles\Build.bat FPSProjectEditor Win64 Development "C:\Users\Leon\Documents\Unreal Projects\FPSProject\FPSProject.uproject" -rocket" exited with code -1.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Now when I try to open the project in editor it doesn’t work.

2

Hi Leon,

What was the last step you had completed before this error occurred?

Thanks,
-W

3

Coded the basic Game Mode stuff in stage 2 of the First Person shooter Tutorial.

4

I fixed it, was accidentally putting the code in the constructor! My bad ><

5

No worries! I went through this tutorial myself not too long ago, so I wanted to make sure nothing got broken. :slight_smile: