Failed to launch editor

Development Getting Started & Setup
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1

Hi, my versio 4.4.3, when i tryed add code to template project, i had error telling adding failed. WHen i pressed button add again was getting error there’s already such class. After closing editor can’t run it again when make double click on .uproject file and error says

Error

Failed to launch editor

ОК

When i launch launcher and press launch engine nothing happens and button stay pressed. If i launch UE4Editor.exe from Engine\Binaries\Win64 folder editor launches fine, so what’s the problem?

2

without any solution just went reinstall engine with manual clearing previous folder from any files/folders to be sure nothing old exist