When I try to save, I get the following messages :

Save failed with the following error: TableKmls: :store failed
Unknown column 'created' in 'field list' SQL=INSERT INTO `xxxxx_hotspots_kmls` (`hotspots_kml_id`,`catid`,`original_filename`,`mangled_filename`,`mime_type`,`created_by`,`created`) VALUES ...

In the #__hotspots_kmls table, you can find the field 'created_by' and not 'created'.

And this table seems a little bit strange : no 'id' and no 'title'.

So if I solve the save problem (modification in the kmls.php file or in the table structure),
The KLM record is saved but has no title...