For those of you searching the OE2.2 and OE2.5 version of the xcplugin you can download it from here:
http://www.dreambox4u.com/downloads/plugins/xcplugin/
I've installed the plugin on my Dreambox 7080HD (enigma OE 2.2) as described in the first post. I can start the plugin, navigate through the items and view the EPG of the items possessing one.
But if I try to select/view an item I get a GS (green screen) and the plugin crashes leading to a...