Can't build with 4.12.5 and VS 2015 Update 3

Development Pipeline & Plugins
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1

Title says it all, really.

Updated project from 4.12.3 to 4.12.5, worked fine, went smooth.

Updated VS 2015 to Update 3, which I though was fine with 4.12.5, can’t build or compile anymore. Different errors; for build, can’t produce .pdb; for compile, can’t produce .dll

Output Log when trying to build for Windows 64-bit (done this many times before):

LogSavePackage: Save=443.18ms
LogSavePackage: Moving '../../../../../../Users/bajji/Documents/Unreal Projects/Browser_prototype 4.12/Saved/UEDPCMinimal_DefaultEE7E90F24EEA62D34020D08238290247.tmp' to '../../../../../../Users/bajji/Documents/Unreal Projects/Browser_prototype 4.12/Saved/Autosaves/Game/StarterContent/Maps/UEDPCMinimal_Default.umap'
LogSavePackage:Display: Finished SavePackage ../../../../../../Users/bajji/Documents/Unreal Projects/Browser_prototype 4.12/Saved/Autosaves/Game/StarterContent/Maps/UEDPCMinimal_Default.umap
LogEditorTransaction: Undo Spawn Play From Here Start
MainFrameActions: Packaging (Windows (64-bit)): Running AutomationTool...
MainFrameActions: Packaging (Windows (64-bit)): Automation.ParseCommandLine: Parsing command line: -ScriptsForProject=C:/Users/bajji/Documents/Unreal Projects/Browser_prototype 4.12/Browser_prototype.uproject BuildCookRun -nocompile -nocompileeditor -installed -nop4 -project=C:/Users/bajji/Documents/Unr
MainFrameActions: Packaging (Windows (64-bit)): eal Projects/Browser_prototype 4.12/Browser_prototype.uproject -cook -stage -archive -archivedirectory=C:/Users/bajji/Documents/Browser Prototype/Exes -package -clientconfig=Development -ue4exe=UE4Editor-Cmd.exe -pak -prereqs -nodebuginfo -targetplatform=Win64 -build -CrashReporter -utf8output
MainFrameActions: Packaging (Windows (64-bit)): Automation.Process: Setting up command environment.
MainFrameActions: Packaging (Windows (64-bit)): BuildCookRun.SetupParams: Setting up ProjectParams for C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject
MainFrameActions: Packaging (Windows (64-bit)): Project.Build: ********** BUILD COMMAND STARTED **********
MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe Browser_prototype Win64 Development -Project="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject"  "C:\Users\ba
MainFrameActions: Packaging (Windows (64-bit)): jji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject"  -remoteini="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12" -noxge -generatemanifest -NoHotReloadFromIDE
MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 3.8014962s to run UnrealBuildTool.exe, ExitCode=0
MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe Browser_prototype Win64 Development -Project="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject"  "C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Bro
wser_prototype.uproject"  -remoteini="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12" -noxge -NoHotReloadFromIDE -ignorejunk
MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Performing 2 actions (2 in parallel)
MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: readInputFile.cpp
MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(6): fatal error C1083: Cannot open include file: 'istream': No such file or directory
MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: **ERROR: UBT ERROR: Failed to produce item: C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Binaries\Win64\Browser_prototype.pdb**
MainFrameActions: Packaging (Windows (64-bit)): UnrealBuildTool: Total build time: 8.64 seconds
MainFrameActions: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 8.8742852s to run UnrealBuildTool.exe, ExitCode=5
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Command failed (Result:5): C:\Program Files (x86)\Epic Games\4.12\Engine\Binaries\DotNET\UnrealBuildTool.exe Browser_prototype Win64 Development -Project="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype
 4.12\Browser_prototype.uproject"  "C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject"  -remoteini="C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12" -noxge -NoHotReloadFromIDE -ignorejunk. See logfile for details: 'UnrealBuildTool-2016.07.28-16.40.29.txt' 
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.CommandUtils.RunAndLog(String App, String CommandLine, String Logfile, Int32 MaxSuccessCode, String Input, ERunOptions Options, Dictionary`2 EnvVars)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.CommandUtils.RunUBT(CommandEnvironment Env, String UBTExecutable, String CommandLine, String LogName, Dictionary`2 EnvVars)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.UE4Build.BuildWithUBT(String TargetName, UnrealTargetPlatf
MainFrameActions: Packaging (Windows (64-bit)): orm TargetPlatform, String Config, FileReference UprojectPath, Boolean ForceMonolithic, Boolean ForceNonUnity, Boolean ForceDebugInfo, Boolean ForceFlushMac, Boolean DisableXGE, String InAddArgs, Boolean ForceUnity, Dictionary`2 EnvVars)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.UE4Build.Build(BuildAgenda Agenda, Nullable`1 InDeleteBuildProducts, Boolean InUpdateVersionFiles, Boolean InForceNoXGE, Boolean InUseParallelExecutor, Boolean InForceNonUnity, Boolean InForceUnity, Boolean InShowProgress, Dictionary`2 PlatformEnvVars, Nullable`1 InChangelistNumberOverride,
 Dictionary`2 InTargetToManifest)
MainFrameActions: Packaging (Windows (64-bit)):    at Project.Build(BuildCommand Command, ProjectParams Params, Int32 WorkingCL, ProjectBuildTargets TargetMask)
MainFrameActions: Packaging (Windows (64-bit)):    at BuildCookRun.DoBuildCookRun(ProjectParams Params)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.BuildCommand.Execute()
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Execute(List`1 CommandsToExecute, CaselessDictionary`1 Commands)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Automation.Process(String[] CommandLine)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.MainProc(Object Param)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param)
MainFrameActions: Packaging (Windows (64-bit)):    at AutomationTool.Program.Main()
MainFrameActions: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=5 (5)
MainFrameActions: Packaging (Windows (64-bit)): Domain_ProcessExit
MainFrameActions: Packaging (Windows (64-bit)): copying UAT log files...
MainFrameActions: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults:Error: Error Unknown Error

Output Log when trying to compile:

LogVSAccessor:Warning: Couldn't access Visual Studio
Recompiling GamepadUMGPlugin...
Recompiling Browser_prototype...
Launching UnrealBuildTool... [C:/Program Files (x86)/Epic Games/4.12/Engine/Binaries/DotNET/UnrealBuildTool.exe Browser_prototype -ModuleWithSuffix GamepadUMGPlugin 7537 -ModuleWithSuffix Browser_prototype 6073 Win64 Development -editorrecompile -canskiplink "C:/Users/bajji/Documents/Unreal Projects/Browser_prototype 4.12/Browser_prototype.uproject"  -2015]
Warning: Starting HotReload took  0.1s.
CompilerResultsLog: New page: Compilation - Jul 28, 2016, 8:56:25 AM
CompilerResultsLog: Info Creating makefile for hot reloading Browser_prototype (UnrealBuildTool.exe is newer)
CompilerResultsLog: Info Compiling game modules for hot reload
CompilerResultsLog: Info Parsing headers for Browser_prototypeEditor
CompilerResultsLog: Info   Running UnrealHeaderTool "C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Browser_prototype.uproject" "C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Intermediate\Build\Win64\Browser_prototypeEditor\Development\Browser_prototypeEditor.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatab
ase error" -Unattended -WarningsAsErrors -installed
CompilerResultsLog: Info Reflection code generated for Browser_prototypeEditor in 8.6675648 seconds
CompilerResultsLog: Info Performing 18 actions (2 in parallel)
CompilerResultsLog: Info [2/18] Resource PCLaunch.rc
CompilerResultsLog: Info PCH.Browser_prototype.h.cpp
CompilerResultsLog: Info Module.GamepadUMGPlugin.cpp
CompilerResultsLog: Info [4/18] Resource ModuleVersionResource.rc.inl
CompilerResultsLog: Info [5/18] Resource PCLaunch.rc
CompilerResultsLog: Info GamepadUMGPlugin.generated.cpp
CompilerResultsLog: Info GenerateGeneObjects.cpp
CompilerResultsLog: Info Browser_prototype.generated.cpp
CompilerResultsLog: Info ScaleVectors.cpp
CompilerResultsLog: Info readInputFiles.cpp
CompilerResultsLog: Info Browser_prototype.cpp
CompilerResultsLog: Info Auto_Layout_C.cpp
CompilerResultsLog: Info readInputFile.cpp
CompilerResultsLog: Info C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\string(6): fatal error C1083: Cannot open include file: 'istream': No such file or directory
CompilerResultsLog: Info GenerateTrack.cpp
CompilerResultsLog: Info MyBlueprintFunctionLibrary.cpp
CompilerResultsLog: Info [16/18] Resource ModuleVersionResource.rc.inl
CompilerResultsLog: Info [17/18] Link UE4Editor-GamepadUMGPlugin-7537.dll
CompilerResultsLog: Info    Creating library C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Plugins\GamepadUMGPlugin\Intermediate\Build\Win64\UE4Editor\Development\UE4Editor-GamepadUMGPlugin-7537.lib and object C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Plugins\GamepadUMGPlugin\Intermediate\Build\Win64\UE4Editor\Developm
ent\UE4Editor-GamepadUMGPlugin-7537.exp
CompilerResultsLog: Info **ERROR: UBT ERROR: Failed to produce item: C:\Users\bajji\Documents\Unreal Projects\Browser_prototype 4.12\Binaries\Win64\UE4Editor-Browser_prototype-6073.dll**
CompilerResultsLog: Info Total build time: 108.81 seconds
LogMainFrame: MainFrame: Module compiling took 109.161 seconds
Warning: HotReload failed, recompile failed
2

Hey ,

Can you make sure that no other versions of Visual Studio are running and that nothing regarding the project you are trying to compile is open? Such as a notepad open of a file in the project.

The “UBT ERROR: Failed to produce item…” can mean that it simply cant write over the project files because they are currently being used by another program.

3

No other versions of VS are running, though I believe Update 2 is still installed. I’m actually reverting to Update 2 now to see if that helps the situation.

4

OK, so it turns out that the problem was with VS and not UE4 (sorry). My VS install had been slightly corrupted (probably because I had cancelled an update partway through then updated again). Everything worked fine, but certain things were missing, like istream.

Long story short, I uninstalled VS the normal way, nuked the remaining traces with Visual Studio Uninstaller, deleted the for-some-reason still existing Microsoft Visual Studio 14.0 folder in Program Files (x86), and reinstalled VS with Update 3.

It works fine now.