Uninstalled and deleted NVpack
fresh install of UE 4.13
Reinstalled android works 1R4, (did not install Nsight, as project is blueprint only, read it caused issues)
deleted “Plugins” “Build” “Intermediate” “Binaries” and “Saved”.
Game was finally able to build (ETC2, shipping, not distibution). Must have been something held over from converting from 4.10
Copied latest plugin to plugin folder.
Copied latest libraries
Plugin active, android settings according to guide.
downloaded android sdk 22, as well as build tools just in case.
opened build.xml in wordpad and changed java target and source from 1.5 to 7 as described. (made copy just in case I need a different tool)
copied new ant.bat and ant.orig.bat
Mopub and adcolony are set up online, so enabled adcolony in plugin settings.
Build Successful!
I guess the issue was the holdover files from 4.10! Thanks for all your help, hopefully if anyone else has this issue, deleting those folders will help.