I figured it out: there is a bug in UI7 where when I press the start button for inclusion mode it never stops and the manual stop button doesn't do anything. It took a lot of luup restarts at the right moment to get it to work. I don't know if this is a bug but I tried this on 2 Veras and it did the same so it's not just for me I think....

I had the same problem... I just added the I_Arduino1.xml to the gateway as you suggested and it worked! Thanks. --Steve