Can't register for push notification on any device ios9.1 and newer.

We've been tracking down push notification bug where it turns out we aren't getting device tokens.

After digging into it, we found that devices that have ios8 installed seem to be registering for notifications, but the ios9 ones are not.

We set some breakpoints in Xcode and found that it's calling didFailToRegisterForRemoteNotificationsWithError.

We're running 5.3.4f1.

Anyone have any ideas or known bugs on this?

We are asking with the new syntax:...

Can't register for push notification on any device ios9.1 and newer.