So, I’m very new to UE4, and just trying to wrap my head around the API and such. I created a C++ project (Physics ball template) and it loaded and compiled just fine. So I added a new class via the class wizard, and when I attempted to recompile it began giving me errors inside of ‘archivebase.h’ I’m 99.9% positive that’s not my code…since I haven’t done anything yet. So I’m trying to figure out what I might have done wrong. Any help would be awesome!
Could you probably post your error log? 
Project no longer compiling
Error 1 error : In MyActor: Unknown class specifier 'EditAnywhere' C:\Users\Aaron\Documents\Unreal Projects\practice\Source\practice\Public\MyActor.h 13 1 practice
Error 2 error code: OtherCompilationError (2) C:\Users\Aaron\Documents\Unreal Projects\practice\Intermediate\ProjectFiles\Error practice
Error 3 error MSB3073: The command ""C:\Program Files\Epic Games\4.6\Engine\Build\BatchFiles\Build.bat" practiceEditor Win64 DebugGame "C:\Users\Aaron\Documents\Unreal Projects\practice\practice.uproject" -rocket" exited with code -1. C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets 38 5 practice
4 IntelliSense: identifier "FGuid" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Core\Public\Serialization\ArchiveBase.h 561 26 practice
5 IntelliSense: identifier "FGuid" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Core\Public\Serialization\ArchiveBase.h 569 18 practice
6 IntelliSense: identifier "FGuid" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Core\Public\Serialization\ArchiveBase.h 770 24 practice
7 IntelliSense: identifier "FOnSelectedLevelsChangedEvent" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Classes\Engine\World.h 1976 2 practice
8 IntelliSense: identifier "UParticleModuleEventSendToGame" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Classes\Particles\ParticleSystemComponent.h 890 68 practice
9 IntelliSense: identifier "UParticleModuleEventSendToGame" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Classes\Particles\ParticleSystemComponent.h 903 68 practice
10 IntelliSense: identifier "UParticleModuleEventSendToGame" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Classes\Particles\ParticleSystemComponent.h 921 69 practice
11 IntelliSense: identifier "UParticleModuleEventSendToGame" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Classes\Particles\ParticleSystemComponent.h 933 42 practice
12 IntelliSense: no instance of constructor "FReadSurfaceDataFlags::FReadSurfaceDataFlags" matches the argument list c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Public\UnrealClient.h 57 92 practice
13 IntelliSense: no instance of constructor "FReadSurfaceDataFlags::FReadSurfaceDataFlags" matches the argument list c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\Engine\Public\UnrealClient.h 65 87 practice
14 IntelliSense: identifier "FMeshBatchElement" is undefined c:\Program Files\Epic Games\4.6\Engine\Source\Runtime\ShaderCore\Public\VertexFactory.h 488 131 practice
15 IntelliSense: cannot open source file "MyActor.generated.h" c:\Users\Aaron\Documents\Unreal Projects\practice\Source\practice\Public\MyActor.h 6 1 practice
16 IntelliSense: expected an identifier c:\Users\Aaron\Documents\Unreal Projects\practice\Source\practice\Public\MyActor.h 14 2 practice