Old version of "Mediathek"

I have installed xbmc "eden" on my atv1. Works fine, so far. Now I would like to use a video plugin "Mediathek". Works poorly. When I install it over the xbmc surface, I get version 0.29. Further uzpdates are not possible from xbmc. I found, that the latest version of the plugin is 0.45. How can I get it? And how can I install it, when xmbc does not offer it for me?
The plugin always tell me to check the logfiles. Where do I find them?

Regards,

Aquarius99