can't download from CH Play after custom room and root

[AC Question]

I'm using Galaxy Y but can't download from CH Play after custom room and root. Please show me how to fix this.
Thanks alot

 

[richardshub]

Oftentimes, rooting or installing a custom ROM can change data contained within Android’s system directory. Some alterations to the system directory can cause the Play Store to stop functioning. A major cause of Play Store failure comes from using a custom recovery (what’s a custom recovery?) to restore the system or data directory. I advise using Titanium Backup, or a similar backup solution, to restore apps with data.
Don't worry, there're a great deal of apps helping./