ok so try to set it up again and in the ide setup of eclipse installer click all packages under openhab and add them by double clicking.
After launching eclipse and setup tasks you will still have compile errors.
A good old weapon will be “clean all projects” and marking all projects, then right click refresh.
After having still errors, start closing some projects. I closed cometvisu, pebble and other bindings. Try closing one, then clean all projects.
Do this steps, I think you need to close 3-4 projects by right click ->close project.
This should remove the workspace errors and at least make you launch openhab.
Let me know if you still wont get it compiling and running.
this is cause it is a demo extension service. Since it is inside the IDE where you dont have karaf.
You shouldnt install those, since its just dummy data.
What exactly do you want to do from the IDE ?
If you wanna dev some bindings, you should be fine…