I have a samsung s4, and when (in es file explorer) i try to backup an apk i have purchased, that fails every time. No problem with free apps. Of course copy theme without firts backup fails too.
Since i have this new phone!
Anyway, i went through with the Allmine update on my backup PE (on top of rooted Ermine) and all seems fine. I will test battery life before i update the other one.
BTW. i moved library to extsd and after allmine install it is back on intsd and wiped clean. I'll move it again, no problem this PE was almost empty.
But good to know for the next time
I'm willing to delete apps not needed but i guess i'll hold on to playstore and google talk.
I've been using the PE for about 2 days on one charge as well.