Api key for .xml feed - can't get it to work

Hello everyone,

I have set-up a channel at ThingSpeak and I am streaming .xml feed through Xml Parser which works (see attached image)My problem is however that I can not get it to work with Pachube Read nor Read Pachube. I assume it is due to the Api key that I provide but I don't see a reason why it would be wrong.

Do you think it is something wrong rather with a component or ThingSpeak Api Read key?