RunUAT.bat ERROR

hi,

when i hit the launch button in the ue4 editor (4.6.1) i get this error:

RunUAT.bat ERROR: AutomationTool was unable to run successfully.

when i hit F5 in visual studio i got this error:

2>Error: Unable to launch the previously selected debugger. Please choose another.

thanks in advance

This is a duplicate of: RunUAT.bat ERROR - Platform & Builds - Unreal Engine Forums

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Thanks