I just upgraded the plugin, from the upgrade window... I did not read the notice on the plugin homepage prior to upgraded so, I did not follow the "upgrade from the plugin page" instruction.
I am getting two errors on the top of the Simple Ads Manager admin page that say:
Database table wp_pv_sam_ads hasn't been upgraded!
Database table wp_pv_sam_zones hasn't been upgraded!
I have deleted the widget and re-installed it, and I am still seeing these alerts.
The plugin is not working properly. It only shows default ads. Any ads I have added to zones are marked inactive and cannot be reactivated.