I am pretty sure that vera has done it again - screwed up an update. Basic code, that has not changed in years is no longer working.
Specifically - the UI is not passing in values for CalendarID and Credential file names. So they cannot be set and therefore a new install will fail. (Technically lul-settings is not being populated)
For users with existing plugins - they still work as long as you do not try to change CalendarID or Credential FileName
I will have to follow up with vera development.