Hi John - I know this is only tested with 2.1 - any plans to update for 2.5+?
With the changes to the database structure, the plugin activation fails on adding 'simplegroups' to the new "roles" table. Adding the entries manually results in Framework Error when trying to add/update group:
system/libraries/ORM.php [354]:
The settings property does not exist in the Role_Model class.
Thanks for checking this out.