XMLConnectors acts differently locally/online!

Hey guys, Im populating several comboboxes with an XMLConnector from an XML file in the same dir. When I run it locally, everything works fine, but when I upload it to my website the comboboxes arent populated. Same files.

What could be the reason?

Also, why does the connector stop working ( this is from another example ) in a movie with scenes, but works when only one scene is previewed? So weird?!