Google Play Failure

[MonsterRay]

Once a turn on or restart my Galaxy s2 (android 4.1.2), ''the process com.google.process.gapps has stopped'' pops up.

I open google play, it automatically and immediately closes itself. Then I go to applicatin manager --> google play --> clear data. This problem fixed.

But then if I start to download and install an app from google play, it will close itself again.

 

[MonsterRay]

I clicked ''uninstall updates'' in google play in application manager. Now my google play has gone...... what should I do x_x