I have a (big) bug when adding a new location (all addons

Hi

I have a (big) bug when adding a new location (all addons activated, trying on a new and clean WP install) :

Fatal error: Class 'AgmMapModel' not found in C:\wamp\www\wordpress\wp-content\plugins\appointments\includes\addons\lib\app_locations.php on line 151

# Time Memory Function Location
1 0.0007 330176 {main}( ) ..\admin.php:0
2 0.3518 31018032 require( 'C:\wamp\www\wordpress\wp-admin\menu.php' ) ..\admin.php:106
3 0.3553 31118496 require_once( 'C:\wamp\www\wordpress\wp-admin\includes\menu.php' ) ..\menu.php:244
4 0.3587 31122176 do_action( ) ..\menu.php:97
5 0.3588 31124080 call_user_func_array ( ) ..\plugin.php:406
6 0.3588 31124160 Appointments->admin_init( ) ..\plugin.php:406
7 0.3609 31158632 apply_filters( ) ..\appointments.php:5473
8 0.3610 31169872 call_user_func_array ( ) ..\plugin.php:173
9 0.3610 31169904 App_Locations_LocationsWorker->save_settings( ) ..\plugin.php:173
10 0.3611 31171104 App_Locations_Model->populate_from_storage( ) ..\app-locations-location_support.php:180
11 0.3611 31171392 App_Locations_Location::get_location( ) ..\app_locations.php:109
12 0.3611 31172216 App_Locations_MappedLocation->__construct( ) ..\app_locations.php:21

best regards,
Alex