Thank you! That seems to be the solution. Last night I remembered to take the SD card out of the computer and put it in the machine. I have all the data now.

I've been using my Respironics System One for five nights. After the first few nights, I had a bruise on the bridge of my nose and I switched to Respironics Nuance nasal pillows for the last two nights. They're much more comfortable. I was using SleepyHead for my Pulse Oximeter (CMS50D+) for the pas...