since some days and therefore some versions I have an old problem, that was solved, back When I start WD and the data gets collected from the data logger, everything gets extracted, but the solar data is always zero on the graphs for the time-period, WD was down.
must be a hardware thing,…as its Ok for me…
i know from other tests peter that at times the solar data is just not there in the downloaded data, from your datalogger
i do not know why that is happening for you.