Just out of interest Stu, what was different with the US version of the Vue and the UK/Australia/Metric version that was returning so many coms errors?
Second this. Also, I'm using the serial weatherlink hooked to a keyspan 19HS, and get about one com error per 10k as well. Was actually curious why I was getting them and found this thread.
I don't have any ferrites on the serial cable, so I might try that, but I figured a 0.01% error is not exactly a problem. Would be cool to eliminate the errors, but hey, it's still much better than my previous LaCrosse.