Life Support 3 - Where to start??

I downloaded LS3, Custom addon framework, resource transport, gas systems n all that shit from SVN. I set up a few generators and the storage.
In LS2 i would have simply linked up the generators to the storage.
In LS3 trying to link anything results in an “Invalid Category” error. I tried messing with those resource nodes but still no luck. Can anyone help me out?