I updated to firmware 1.7.4453 via the iOS app. Unfortunately, when my Vera Plus rebooted, my configuration was not restored. I had to contact customer support who put everything back in place. Unfortunately I now notice that associations are not working on any devices which have them configured, The correct data shows up in the Device Options for each of the devices, but functionality has been lost.
I have contacted customer support again and will come back here to report when they get back to me.