I have the current beta version (4.5.3b1) and when i start the app, i have directly a Force Close.
I'm on the latest version of Android Marshmallow on my Nexus 7 2013 Wifi.
That is not happening with the Play Store version.
1Password Version: 4.5.3b1
Extension Version: Not Provided
OS Version: 6.0
Sync Type: Dropbox