When upgrading Android Secure Launcher to version 2.0, the Launcher opens and immediately loads a screen with the message "Waiting for profile". The device cannot navigate outside of this screen within the launcher.
Edit the Secure Launcher profile to ensure that the Hardware Keys check box is enabled. This is configured under the Preferences tab. After enabling this setting and republishing the profile, devices should update correctly.
This issue has been given the identifier ALAU-169096. This issue has been resolved in Android Launcher 2.0.1.