Unhandled exception: Error: failed to pre-parse snapshot

[Bragol]

I've made a watch face(whoa), and I ran into an odd bug. When uploading the app to the simulator, the app runs totally fine. However, upon loading the watch face to a Versa 1, I receive the message Unhandled exception: Error: failed to pre-parse snapshot, and all elements revert to their default states. This happens whenever the watch face is loaded. Does anyone know what this means, and what I can do to fix it?

[JonFitbit]

Is it an overly complex clock with large amounts of code? Or are you doing something intensive when the clock first runs?