Created attachment 3242 port sensors plugin to 4.7 panel Sensors plugin doesn't currently build with 4.7 panel since it doesn't link with libxfcegui4 anymore and sensors plugin doesn't link directly. Attached patch fix the problem, though a real fix would be to port to libxfce4ui.
thank you very much, this helped a lot as I didn't have to find out on my own :) patch applied.