Re: unfortunately, Google Play Store has stopped
I have an HP Slate 17 model 1020, Android 4.4.4
I was getting multiple "unfortunately .......... has stopped" errors. My device became unusable.
I followed all the clear cache / data rec's. I did the factory reset several times, which initially worked but within minutes, the errors resurfaced. After several attempts at doing the same thing and hoping for a different result,

, I noticed updates downloading and decided to disable auto update in the Google play store, which I had to do from another device but the same Google account.
Factory reset and ........... Stable!! No errors! Disabled all manufacturer software (sorry HP but need my yablet), games, Hangouts and Skype. Carefully updated, one at a time then reboot, Google system and integrated apps, YouTube was last. Still stable.
Tried YouTube, streamed some video and STABLE! YEAH!
NOW FOR Netflix. Nope, errors from play services and store. Uninstall, reboot and stable again.
I did this for any other video streaming app that I used and they all failed except Crackle, which would open, search, play one movie and then crash my system. Reboot and ok until my next Crackle fix.
For over a month now, it remains stable. I haven't installed anything else and keep play auto update off. This affects all devices on that play account (except for my phone, don't know why) but my devices never slow down because of an unexpected update download. In fact, they all seem to work better than ever.
This indicates that the issue is with the streaming apps and not Android. I suspect they have updated their apps code, optimized for newer android versions and don't support legacy versions. Understandable, given the thin resources for such work.
Hopefully, this helps someone. This advice is free and I want it to remain that way. /FyreQ