ue4Editor-projectname.dll problem

Hi all,

I can’t open my project and a windows appears:
The following modules are missing or built with a different engine version.

I’ve tried to open it with “switch unreal version” and “Generate Visual Studio…” but no solution:
error CS0101: … already contains a definition for ‘projectnametarget’

Hello,

Have a look at the two posts linked below, and see if the solutions there fix your issue. If not, feel free to come back and let me know and I can attempt to offer some additional suggestions.

Have a great day

No, i’ve tried but nothing happened.
I was following the localization tutorial and after creating a new C++ class, after a bit, i’ve closed my project and when i tried to reopen my project this window appears:
The following modules are missing or built with a different engine version: UE4Editor-ProjectName.dll

I use only blueprints (no C++, i’m not a programmer).

Launhing the game with VS this window appears:

Running C:/Program Files/Epic Games/4.10/Engine/Binaries/DotNET/UnrealBuildTool.exe -projectfiles -project="…]/Unreal Projects/Folder/Name.uproject" -game -rocket -progress
Visual C++ 2015 toolchain does not appear to be correctly installed. Please verify that “Common Tools for Visual C++ 2015” was selected when installing Visual Studio 2015.
Visual C++ 2015 toolchain does not appear to be correctly installed. Please verify that “Common Tools for Visual C++ 2015” was selected when installing Visual Studio 2015.
Discovering modules, targets and source code for game…
Errors detected while compiling […]\Unreal Projects[Folder]\Intermediate\Build\BuildRulesRocketUE4ModuleRules.dll:[…]\Unreal Projects[Folder]\Intermediate\Source[Name].Target.cs(6,14) : error CS0101: Lo spazio dei nomi ‘’ contiene già una definizione per ‘[Name]Target’.
UnrealBuildTool Exception: ERROR: UnrealBuildTool encountered an error while compiling source files

Lo Spazio dei nomi = NameSpace
Contiene già una definizione per = Already contains a defnition for

I see the issue now. You’ll need to modify your Visual Studio 2015 installation to include the C++ and Common Tools options. To do this, go to your Visual Studio installer and select Modify. Then ensure that you check the boxes for C++ and Common Tools. The default Visual Studio 2015 installation does not come with the C++ content, which is required for the engine, so you must install it manually.

I don’t know where i can find this installer setting, this is the second time that I open VS, anyway if I remove Visual Studio can i, maybe, fix this problem?

Here is a link to an article that shows how to install the C++ content: Setup Changes in Visual Studio 2015 Affecting C++ Developers - C++ Team Blog

Have a great day

The problem remains.

somebody else can help me?