I’m having some trouble trying to declare a USTRUCT for use with a data table. I’m attempting to follow the tutorial on the wiki, but I’m stuck 
This is my code:
#pragma once
#include "Engine/DataTable.h"
#include "ItemDataTable.generated.h"
/**
*
*/
UCLASS()
class MYGAME_API UItemDataTable : public UDataTable
{
GENERATED_UCLASS_BODY()
USTRUCT(BlueprintType)
struct FItemData : public FTableRowBase
{
GENERATED_USTRUCT_BODY()
};
};
The compiler throws this error:
1>------ Build started: Project: MyGame, Configuration: Development_Editor x64 ------
1> Parsing headers for MyGameEditor
1>LogTextLocalizationManager : warning : The selected culture 'sv_SE' is not available; falling back to 'en'
1> Reflection code generation finished for MyGameEditor and took 4,176
1> Performing 3 actions (max 6 parallel jobs)
1> ItemDataTable.cpp
1> MyGame.generated.cpp
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(27): error C2653: 'FItemData' : is not a class or namespace name
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(37): error C2653: 'FItemData' : is not a class or namespace name
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(301): error C2065: 'FItemData' : undeclared identifier
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(301): error C2923: 'UScriptStruct::TCppStructOps' : 'FItemData' is not a valid template type argument for parameter 'CPPSTRUCT'
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(301): error C2512: 'UScriptStruct::TCppStructOps' : no appropriate default constructor available
1>F:\Unreal Engine\Unreal Projects\MyGame\Intermediate\Build\Win64\Inc\MyGame\MyGame.generated.cpp(301): error C2664: 'UScriptStruct::UScriptStruct(const UScriptStruct &)' : cannot convert argument 1 from 'FPostConstructInitializeProperties' to 'EStaticConstructor'
1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
1> -------- End Detailed Actions Stats -----------------------------------------------------------
1>ERROR : UBT error : Failed to produce item: F:\Unreal Engine\Unreal Projects\MyGame\Binaries\Win64\UE4Editor-MyGame.dll
1> Cumulative action seconds (6 processors): 0,00 building projects, 8,89 compiling, 0,00 creating app bundles, 0,00 generating debug info, 0,00 linking, 0,00 other
1> UBT execution time: 18,59 seconds
1>C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets(38,5): error MSB3073: The command ""F:\Unreal Engine\4.4\Engine\Build\BatchFiles\Build.bat" MyGameEditor Win64 Development "F:\Unreal Engine\Unreal Projects\MyGame\MyGame.uproject" -rocket" exited with code -1.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========