Google Play downloads stop at 100% and won't install
I have a ZTE V889S (aka ZTE Blade C, ZTE V807) with android 4.1.2. When I download any application/game off the Play Store, it will download up to 100%, yet not install. If I exit google play, wipe the process, and start it again, then it will install the application that it already downloaded. when applications update, I have to restart google play multiple times to update everything, which becomes a nuisance. Does anyone have any ideas as to what is causing this and how I can fix it?
I had the problem even on the original android 4.1.2 rom (with the default/not updated play store app), and I currently have Lewa OS (A chinese custom rom), which still has the problem. There is enough space in every possible install location (I've tried setting it to the SD card and the internal storage). The alternative chinese app market has no problem installing applications right after downloading them.
Any help is greatly appreciated.
Phone Specs: gsmchoice.com/en/catalogue/zte/bladec/ZTE-Blade-C.html
Lewa OS Website (in Chinese): lewaos.com/main.html