[QUOTE=Marco Steinhaeuser;149652]Hi dfu,
have a look at this one:
Regards[/QUOTE]
Thank you very much 
That did the trick.
Also, is there any source where I can find the developmenet-changes?
It seems like “oxConfig::getParameter” is not supported anymore. Looking in the class-reference, it is still listed and not marked as deprecated.
I was looking here:
http://docu.oxid-esales.com/CE/sourcecodedocumentation/4.3.0.26948/classox_config.html#a1fc86da9374367a5ce322da1c56925bf