I can't start UE5.0.3 both in source code compiling and Epic Games Launcher

Development Getting Started & Setup
,
1

I can successfully start the editor in UE5.1-UE5.3, but not for UE5.0.

Edition Windows 11 Home
Version 23H2
Installed on ‎9/‎10/‎2023
OS build 22631.3296
Experience Windows Feature Experience Pack 1000.22687.1000.0

The message below is from launcher:

image
image1497×695 39.8 KB

The project could not be compiled. Would you like to open it in Visual Studio?

Running C:/Program Files/Epic Games/UE_5.0/Engine/Binaries/DotNET/UnrealBuildTool/UnrealBuildTool.exe Development Win64 -Project="C:/dev/MyProject4/MyProject4.uproject" -TargetType=Editor -Progress -NoEngineChanges -NoHotReloadFromIDE
Log file: C:\Users\User\AppData\Local\UnrealBuildTool\Log.txt
Creating makefile for MyProject4Editor (no existing makefile)
@progress push 5%
Parsing headers for MyProject4Editor
  Running UnrealHeaderTool "C:\dev\MyProject4\MyProject4.uproject" "C:\dev\MyProject4\Intermediate\Build\Win64\MyProject4Editor\Development\MyProject4Editor.uhtmanifest" -LogCmds="loginit warning, logexit warning, logdatabase error" -Unattended -WarningsAsErrors -abslog="C:\Users\User\AppData\Local\UnrealBuildTool\Log_UHT.txt" -installed
Reflection code generated for MyProject4Editor in 1.2842797 seconds
@progress pop
Building MyProject4Editor...
Using Visual Studio 2022 14.39.33523 toolchain (C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.39.33519) and Windows 10.0.22621.0 SDK (C:\Program Files (x86)\Windows Kits\10).
[Adaptive Build] Excluded from MyProject4 unity file: MyProject4.cpp, MyProject4GameModeBase.cpp
Determining max actions to execute in parallel (12 physical cores, 20 logical cores)
  Executing up to 12 processes, one per physical core
  Requested 1.5 GB free memory per action, 16.24 GB available: limiting max parallel actions to 10
Building 9 actions with 9 processes...
[1/9] Resource Default.rc2
[2/9] Compile SharedPCH.Engine.ShadowErrors.cpp
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): error C2440: '<function-style-cast>': cannot convert from 'const From *' to 'TStringConversion<TStringConvert<From,To>,128>'
        with
        [
            From=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion': no overloaded function could convert all the argument types
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)'
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)': cannot convert argument 1 from 'const From *' to 'const StringConv::FUnused *'
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
        and
        [
            From=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or parenthesized function-style cast
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(737): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(FromRangeType &&)'
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(698): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *,int32)'
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(677): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *)'
        with
        [
            From=TCHAR,
            To=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: while trying to match the argument list '(const From *)'
        with
        [
            From=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: the template instantiation context (the oldest one first) is
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Misc\SecureHash.h(75): note: see reference to function template instantiation 'auto StringCast<ANSICHAR,128,TCHAR>(const From *)' being compiled
        with
        [
            From=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): error C2440: '<function-style-cast>': cannot convert from 'const From *' to 'TStringConversion<TStringConvert<From,To>,128>'
        with
        [
            From=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion': no overloaded function could convert all the argument types
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)'
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)': cannot convert argument 1 from 'const From *' to 'const StringConv::FUnused *'
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
        and
        [
            From=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or parenthesized function-style cast
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(737): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(FromRangeType &&)'
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(698): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *,int32)'
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(677): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *)'
        with
        [
            From=ANSICHAR,
            To=TCHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: while trying to match the argument list '(const From *)'
        with
        [
            From=ANSICHAR
        ]
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: the template instantiation context (the oldest one first) is
C:\Program Files\Epic Games\UE_5.0\Engine\Source\Runtime\TypedElementFramework\Public\Elements\Framework\TypedElementData.h(64): note: see reference to function template instantiation 'auto StringCast<TCHAR,128,ANSICHAR>(const From *)' being compiled
        with
        [
            From=ANSICHAR
        ]

I think my visual studio configuration is also enough.

image
image1236×496 23.1 KB

image

Now I successfully compiled the engine on UE5.1 and UE5.3(I didn’t test UE5.2). However, I also can’t compile the UE5.0(both tested in 5.0.3 and 5.0.2). Very weird.

image
image956×196 7.14 KB

Build started at 9:51 AM...
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\Win\Win.Automation.csproj (in 79 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\Linux\Linux.Automation.csproj (in 90 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\Scripts\AutomationScripts.Automation.csproj (in 100 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\BuildGraph\BuildGraph.Automation.csproj (in 107 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\Mac\Mac.Automation.csproj (in 116 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\IOS\IOS.Automation.csproj (in 124 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\TVOS\TVOS.Automation.csproj (in 131 ms).
1>------ Build started: Project: UE5, Configuration: Development_Editor x64 ------
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\AutomationUtils\AutomationUtils.Automation.csproj (in 151 ms).
Failed to restore C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Programs\AutomationTool\Turnkey\Turnkey.Automation.csproj (in 162 ms).
NuGet package restore failed. Please see Error List window for detailed warnings and errors.
1>Using bundled DotNet SDK
1>Log file: C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Programs\UnrealBuildTool\Log.txt
1>Creating makefile for UnrealEditor (no existing makefile)
1>Determining max actions to execute in parallel (12 physical cores, 20 logical cores)
1>  Executing up to 12 processes, one per physical core
1>  Requested 1.5 GB free memory per action, 11.78 GB available: limiting max parallel actions to 7
1>Building 61 actions with 7 processes...
1>[1/61] Compile Module.Core.3_of_18.cpp
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): error C2440: '<function-style-cast>': cannot convert from 'const From *' to 'TStringConversion<TStringConvert<From,To>,128>'
1>        with
1>        [
1>            From=TCHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion': no overloaded function could convert all the argument types
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)'
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: 'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const StringConv::FUnused *)': cannot convert argument 1 from 'const From *' to 'const StringConv::FUnused *'
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>        and
1>        [
1>            From=TCHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or parenthesized function-style cast
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(737): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(FromRangeType &&)'
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(698): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *,int32)'
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(677): note: or       'TStringConversion<TStringConvert<From,To>,128>::TStringConversion(const SrcBufferType *)'
1>        with
1>        [
1>            From=TCHAR,
1>            To=ANSICHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: while trying to match the argument list '(const From *)'
1>        with
1>        [
1>            From=TCHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(1048): note: the template instantiation context (the oldest one first) is
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Misc\SecureHash.h(75): note: see reference to function template instantiation 'auto StringCast<ANSICHAR,128,TCHAR>(const From *)' being compiled
1>        with
1>        [
1>            From=TCHAR
1>        ]
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Private\GenericPlatform\GenericPlatformCrashContext.cpp(1391): error C2665: 'TStringConversion<FTCHARToUTF8_Convert,128>::TStringConversion': no overloaded function could convert all the argument types
1>C:\dev\UE5\UnrealEngine-5.0.2-release\Engine\Source\Runtime\Core\Public\Containers\StringConv.h(689): note: could be 'TStringConversion<FTCHARToUTF8_Convert,128>::TStringConversion(const StringConv::FUnused *)'
2 Likes
2

I’'m also struggling with this. not sure where the error is coming from. i’ve buiilt this entirely from blueprints and haven’t really touched VS however learning alot trying to work this out

3

Not sure if this helps but I end up finding that it was a plugin that I had been using. now unfortunately it had been updated but still wasn’t working with 5.0 so built in 5.4 with updated plugin and boom worked. so test with enabling and disabling some of your plugins.

Hope this helps

4

I figured it out. This is a problem relating to Compiling issue. UE5.3 - #2 by DanM - Ask - GameDev.tv. Editing the xml file in the folder C:\Users\USERNAME\AppData\Roaming\Unreal Engine\UnrealBuildTool would fix the problem.

5

It seems my problem is related to the compiler’s version. I figured it out. Anyway, thank you very much.

6

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