I cant open editor after creating c++ class!

Im 14 years old and from Germany.
I just tried to Launch my game so a friend can test it. I installed VS15 and SDK 8.1 but got a lot of Errors.
After i read in the Forum that you should create a c++ class i did this and restartet the Editor.
But it cant open and get the error massage:
The following modules are missing or built with a different engine Version:
(mygamename).dll
would you like to rebuild them now? yes: Error; Try rebuild from sourche manually.

I read in many forums but i have big problems understanding the anwsers.
Please help i just want to come back to the editor and launch game. I dont need an c++ class because i havent learned it already.

If editor crashed there may be a zombie process left in the background.

  • Look for “Unreal Engine” processes in Windows Task Manager and kill them.
  • Recompile.

It diddnt crashed

Luckly I did a copy before so i copyed the Content browser in another Project and everything is back!!
Now I Need help on Launching my game on Windows because i get a lot of Errors.