Eric Steimle

I'm having a little trouble trying this. I only have one Rth which is junction to solder point. The solderpoint is the pad on my PCB. So I tried to assign a network to the top face of that pad like so:

But I get this error when I try to simulate:


My network looks like this, and I set the thermal resistance of the link to my Rth and the power of the "internal" to my LED power. I don't understand the mesh error and didn't find anything searching the forums.