Getting an error from push notification

Generate a new provisioning profile, after you enable Push, and it will work!

I am using Xcode 6.1.1

You don't have to delete or recreate anything. You just have to make Xcode update your active certificates (including the new push notification certificate).

Simply go to Xcode > Preferences > Accounts > pick your Account > pick your Team > View Details

There click the refresh button in the lower left corner. (Also check your code signing in build settings)

I had same problem,

I solved it making sure in Built Settings, Code Signing Identity for debug is set to proper Provisioning Profile

in which you enabled push notifications.

First, you need to make sure you use an app ID without a wildcard. Then you need to enable that app for push notifications for development.

Check this tutorial, for example.

Even after you've enabled your app id for push, it might take a couple of hours for it to work.