I have also had the same problem as @davidwoods.
Following the recent upgrade (latest version 1 hr ago) my site went offline and I had to disable the plugin from my server admin panel.
The error was 500 internal server error
Deactivating the plugin brought the site back live again, so I guess it doesn’t like something. I also deactivated all other plugins to test and it still didn’t want to play nice.
Dannie