Crash when trying to add phone apps to your watch?

UPDATE: if you run into this bug, you are welcome to update to v8.51beta by joining the beta test of the new version at http://bit.ly/bubbeta

Please re-enable “Automatic bubble colors” in the App Bubble Cloud settings for homescreen widgets. This is a bug, which only affects users, who use both the home screen widgets and the watch. The default setting for “Automatic Bubble Colors” is enabled, the crash only happens if you disable it.

Of course this is going to be corrected in the next version of the app. I am sorry for the inconvenience.