Running Liberty 0.5 on my DX. The other day when Gentle Alarm was free on the Amazon AppStore I picked it up and installed it. It works fine on my phone until I reboot, then it says there was an "Unknown error" with authorizing with the Amazon AppStore and to uninstall/reinstall it. Amazon Tech Support can't figure out the issue. I've also tried turning on and off Compatibility Mode (and restarting) in Spare Parts, as well as fixing permissions. I don't know if it's an issue with Liberty or an issue with Gingerbread or an issue with Amazon. Anyone else have a similar experience?