InsteonPLM or any working 1.x binding in OH2b1

On the latest snapshot, ZWave, KNX, Homematic and others should run smoothly now.
I expect many other bindings can be fixed by starting all components immediately after bundle start to prevent iss… by kaikreuzer · Pull Request #3840 · openhab/openhab1-addons · GitHub - you can build this locally and have a try.

How are these configured now?

As described here.

Note that the issues are actually within the bindings, not in the runtime - the new runtime is merely more strict and hence the problems now surface. See also here for some background.