Not quite clear here, but you might check the page output to see if image tags are being overly escaped. Look for \” where there shouldn’t be. If this is the case, you can try the following:
in sell-media/inc/admin-items.php on line 363
change
$new_content = $wpdb->escape( $_POST[‘sell_media_editor’] );
to
$new_content = $_POST[‘sell_media_editor’];
This isn’t really an advisable patch, just a quick duct tape. Though escaping the input *should* not be necessary as it is going in to a parameterized query.
