Hello
Looks like I have almost similar problem.
I installed the 4.9.1 version (I had 4.7) and got the “The system cannot find the path specified” errors.
Output log has been attached.
I deinstalled the old UE4, removed old folders (Epic Games and NVPACK) and installed 4.9.1 version + Android Works.
I modified the env variables (I had C:\NVPACK\android-ndk-r10d instead of C:\NVPACK\android-ndk-r10e and C:\NVPACK\android-sdk-windows\build-tools path instead of C:\NVPACK\android-sdk-windows\build-tools). The paths in SDKConfig are correct.
In C:\NVPACK\android-sdk-windows\build-tools I have only the 22.0.1 folder (with aapt.exe of course).
The PATH env variable:
C:\NVPACK\gradle-2.2.1\bin;C:\NVPACK\apache-ant-1.8.2\bin;C:\NVPACK\jdk1.7.0_71\bin;C:\NVPACK\android-ndk-r10e;C:\NVPACK\android-sdk-windows\extras\android\support-tools;C:\NVPACK\android-sdk-windows\build-tools;C:\NVPACK\android-sdk-windows\platform-tools;C:\NVPACK\android-sdk-windows ools;C:\NVPACK\gradle-2.2.1\bin;C:\NVPACK\apache-ant-1.8.2\bin;C:\NVPACK\jdk1.7.0_71\bin;C:\NVPACK\android-sdk-windows\extras\android\support-tools;C:\NVPACK\android-sdk-windows\build-tools;C:\NVPACK\android-sdk-windows\platform-tools;C:\NVPACK\android-sdk-windows ools;C:\NVPACK\gradle-2.2.1\bin;C:\NVPACK\apache-ant-1.8.2\bin;C:\NVPACK\jdk1.7.0_71\bin;C:\NVPACK\android-sdk-windows\extras\android\support-tools;C:\NVPACK\android-sdk-windows\build-tools;C:\NVPACK\android-sdk-windows\platform-tools;C:\NVPACK\android-sdk-windows ools;