Yes, it’s not specific to UE which makes it infuriatingly hard to diagnose, and your are mostly error free but the ant.bat one, which also makes it even tougher. Sometimes it’s something as small and impossible to find [as a space in something that isn’t supposed to be there][1].
Here’s some more things you can try:
Since you’re mostly having problems with shipping/distribution builds, [double check that you have your keystore set up,][2] it is necessary for distribution.
[Make sure to try this one][3], just to be on the safe side.
I don’t see any proguard errors in your , but just in case [here are two threads wherein proguard][4] was the [problem and how it was fixed.][5]
Lastly, you can delete your current build of TADP and upgrade to the most recent. Just make sure you have SDK 19 and NDK checked when installing.
So, good luck! Sorry I can’t be more specific on this one.
UE 4.7.2 can't pack .apk with Ant - Programming & Scripting - Epic Developer Community Forums
[2]: Sign your app | Android Studio | Android Developers
[3]: Cmd.exe failed with args /c "C:\NVPACK\apache-ant-1.8.2/bin/ant.bat" -quiet debug - Debugging, Optimization, & Profiling - Epic Developer Community Forums
[4]: Android for distribution fails to load on device - Mobile - Epic Developer Community Forums
[5]: 4.7 Android Shipping crash on launch - Mobile - Epic Developer Community Forums