build fails on unreal 4.18.3

[devwinportable]

output:

Project files could not be generated. Log output:

Running C:/Program Files/Epic Games/UE_4.18/Engine/Binaries/DotNET/UnrealBuildTool.exe  -projectfiles -project="C:/unreal-stuff/ue4-sample-project 4.18/HelloWorld.uproject" -game -rocket -progress
Discovering modules, targets and source code for project...
While compiling C:\unreal-stuff\ue4-sample-project 4.18\Intermediate\Build\BuildRules\HelloWorldModuleRules.dll:
ERROR: c:\unreal-stuff\ue4-sample-project 4.18\Source\HelloWorld.Target.cs(31,12) : error CS0122: 'UnrealBuildTool.UEBuildBinaryConfiguration' is inaccessible due to its protection level
ERROR: c:\unreal-stuff\ue4-sample-project 4.18\Source\HelloWorld.Target.cs(29,23) : error CS0051: Inconsistent accessibility: parameter type 'ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>' is less accessible than method 'HelloWorldTarget.SetupBinaries(UnrealBuildTool.TargetInfo, ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>, ref System.Collections.Generic.List<string>)'
ERROR: c:\unreal-stuff\ue4-sample-project 4.18\Source\HelloWorldEditor.Target.cs(24,12) : error CS0122: 'UnrealBuildTool.UEBuildBinaryConfiguration' is inaccessible due to its protection level
ERROR: c:\unreal-stuff\ue4-sample-project 4.18\Source\HelloWorldEditor.Target.cs(22,23) : error CS0051: Inconsistent accessibility: parameter type 'ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>' is less accessible than method 'HelloWorldEditorTarget.SetupBinaries(UnrealBuildTool.TargetInfo, ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>, ref System.Collections.Generic.List<string>)'
ERROR: UnrealBuildTool Exception: Unable to compile source files.