Upgrading From Encore Pro 1.5 to 1.8
Oh, ok, I see it. I thought you were responding to the last post, not the first. And, you are correct, no need to install the 1.8 unless you are running Windows Vista or updating. My mistake.....line up the firing squad. If Terry put Windows Vista on his computer, he does need the 1.8.
Bi-Pap for 17 years now. Rx 12/8 and using a Resmed AirCurve 10 SAuto Bipap Auto.

