Play Store 4.9.13 insufficient storage error and icon issues I've been having issues with the Play Store's recent 4.9.13 update on my Blu Dash 4.5.  Every time I try to install or update any app that is more than 1 MB, I keep getting an "insufficient storage" error, even though I have about 120MB on the apps partition free.  Apps do install and update on an older version, however.  In addition, the icons on the Play Store have weird black borders.  I have searched all over the internet and I have yet to find a solution for either of these problems.  Apparently, most devices affected by these bugs are using MediaTek chipsets and have Android 4.2 on them.  My phone is using the stock ROM and is not rooted.
The correct answer to this problem, and I always see wrong explanations, is that you have a duplicate /data/app-lib folder for the app or apps that are giving you that error.

To fix: Using adb, terminal, or root explorer:

compare /data/app to /data/app-lib 

you will see, for example: 


/data/app/example-app-1.apk
/data/app-lib/example-app-1
/data/app-lib/example-app-2   &lt;--EXTRA


OR


/data/app/example-app-2.apk
/data/app-lib/example-app-1   &lt;--EXTRA
/data/app-lib/example-app-2


So for 1st example remove directory: /data/app-lib/example-app-2

and for 2nd example remove directory: /data/app-lib/example-app-1

Then your app will install just fine!

ALWAYS REMEMBER TO KEEP THE SAME NUMBERS, 

IF THE APK IS 1 REMOVE 2... IF THE APK IS 2 REMOVE 1!