I’ve been having the same thing happen to me. It started when I went to version w. It appears as a second window when I start WD. I just check OK an all appears well. I have the station line chosen for the WS2010.
i have fixed the problem with that ws2010/ws2500 window appearing at start up…
in 10.14 , uploading now
that came about after the change in the weather station type setup (its a whole new format)
daveq, what exactlty is reported in that window?
WS2500 timer on
should only appear if you have selected a WS2500 type weather station
if you could email me your settings file, from c:\windows or c:\winnt
i will have a look