After crawling the internet for hours, I choose these solutions that worked for me.
For Non-rooted Device
Cant open learning hub
http://forum.xda-developers.com/showthread.php?p=34841720
For Rooted Device
I found a way to make it work...
1 - Root.
2 - I used Triangle away.
3 - I installed superuser from the play store on my phone.
4 - Then, go to superSu app -> SETTINGS -> Switch superuser app.
5 - Try Learning hub and readers hub, it should work.
6 - If it works you can reinstall SuperSu (I had to wait around 20-25 minutes and then I was able to reinstall SuperSu from the play store) and uninstall superuser
source: http://forum.xda-developers.com/showthread.php?p=35910349
