Canon Camera Window / CF card problem

Archived from groups: rec.photo.digital (More info?)

I took delivery of a Canon Powershot S70 yesterday and I've experienced
a problem with the bundled Camera Window software. I've trawled Google
Groups for similar problems but found nothing, so it must be me that's
doing something wrong.

I've opted to use an external card reader to transfer the data from the
CF card to my PC as I don't really like the idea of USB1.1 speed using
the direct camera connection, nor do I like draining the battery in the
process.

Everything starts off well, Windows XP detects the presence of the CF
card and I choose to transfer data from it using Camera Window.
Everything proceeds perfectly okay from there and I can transfer the
data without a single problem.

However, when I *carefully* remove the CF card from the reader ("Safely
Remove Hardware" -> unplug card reader from the USB port -> remove the
CF card in a powered off state) then reinsert it into the S70 and
power on in record mode it would appear that the card is corrupt (error
message on the LCD display) and the camera cannot write to it. This
happens with the 32MB Canon branded card supplied with the camera and
the 1GB Kingston card that I purchased separately. The result is that
I have to reformat the card.

The above problem does *not* occur if I copy files directly using
Windows Explorer - I can replace the CF card in the camera and continue
shooting without a hitch. This all seems to point to a problem with
the Camera Window utility, but I could be wrong...

Has anybody else experienced this problem, or have any other
troubleshooting suggestions that I haven't tried above?

Thanks

Jake