android.process.acore has stopped unexpectedly force close in Android emulater

I had the same problem,but finally removed it completely & this is the solution :

The solution: 

In your AVD (Android Virtual Device) manager

Go to->
Settings –> Applications –> Manage Applications –> All 

(button on the top that lets you see all applications) –> scroll down to “Contacts Storage” –> 

Click on “Clear Data”.