On 9 June, 19:39, John Dann wrote:
OK, it does rather look as if this is an awkward problem.

A couple of observations:

You shouldn't need to point to any driver location when you connect up
the the USB logger - it should self-install. If it doesn't then it's
an indication of something more basic wrong, perhaps with Windows.

Have you installed Weatherlink under an admin login? (If not then
there could be some obscure permissions problem).

If you run the 'CP210x USB USB to Serial Converter' which is a simple
utility found on the Windows Start menu in the Weatherlink group (and
'press any key to continue') then does it say anything other than that
the logger is already in serial mode?

If none of these give a clue then there are a couple of other options,
but I don't want to suggest those until you're tried the above.

JGD

John

A little progress, but not much. Ran the USB to Serial converter
utility, which told me that it was now operating correctly.
Auto Detect now informs me that a Vantage Pro Station has been found
on COM4 (which is a step in the right direction).
Attempts to download data result in "No new data to download" (The
last record was at 22:00 on 7th June).
Opening the Vantage Bulletin window results in gibberish - the
graphics are there, but not filled with data apart from the total rain
for the month and year, and the barometer reads: -1109655.5 mb!. No
temperature, humidty, wind data, etc., etc.

On going through the setup walkthrough, when it came to "Set
barometer", the console reading is ".. mb", and pressing OK eventually
resulted in a message that "Computer gave up waiting for response from
station. Check port setting and connections. This is becoming like a
merry-go-round!

CK