[4.7.2] Always same error on Launch/Package on any project.

Development Platform & Builds Mobile
,
7

Hello ,

Effectivly , i am not familiar with Android API.
To be clear , i just followed the step by step and many wiki , tutorials and documentation.

Here below, what I have done :
1. I deleted the old Tappy Chicken project
2. Opened launcher and created a clean Tappy Chicken project in my document/Unreal Project
3. Open Unreal engine 4.7.2 and choose Tappy Chicken project
4. Checked*** File/Package Project/Build Configuration/Development*** ok
5. Hit *** File/Package Project/Android/Android (ETC1)***
6. Packaging process stopped again on Error :



Program.Main: ERROR: ERROR: l:/NVPACK/android-sdk-windows/tools/android.bat failed with args --silent update lib-project --path JavaLibs/google-play-services_lib_rev19 --target android-19
etc..
RunUAT.bat ERROR: AutomationTool was unable to run successfully.
BUILD FAILED

I really have not because, it’s the first time i got problem that i cann’t solve by myself.

Thank you so much for your help.