When developing a Native app, sometimes it is hard to understand certain errors. We got one last week (an error occurred, please contact and admin) where Over the Air Updates (OTA) turned out to have failed due to a mismatch between the current model and native build. But being a native app, it was all guess work to find out what was happening.
The app was effectively not updating over the air anymore, as the widgets inside the build could not talk to the model in the Mendix server anymore.
Please add a check during App Deployment generation that checks if the current model still is compatible with the current build, and if not, warns the developer about impending doom ;).