attachment file disappear when post saved

hi
this plugin is great but has a weird bug that when you save post or update post the file that attached to the post get disappear!
the temporary solution that i find is to put // in front of line 22 in metabox.php in “includes” folder of plugin to disable “save_post” action hooks.

//add_action( 'save_post', array( $this, 'save_attachments_data' ), 10, 2 );

i hope this help someone that faced this problem
bye