Is anyone else having this issue? Often I get that message when trying to download an app. Rebooting the phone often fixes it, but why should I have to do that so often? That was never an issue on any of my other Lumias. Sometimes the app will stop downloading right in the middle of a download and I'll get a "try again" error. Then the download never starts after tapping "try again." Only chance of it working again is after a reboot.