@Mathiassn ,
I have been able to run the therm components in Rhino 5 without issues. We can put in the try / except loop anyway but can I ask what service release of Rhino you are using? Perhaps the Version attribute did not exist in earlier versions of Rhinocommon.
I haven’t downloaded it, but those lines of code fixed it on my computer. Didn’t cause problems at work, but at home im running old SR8 which had the problems… Should be ok now - cheers!