I've got a PR S1 BiPap AutoSV and Sleepyhead used to work for me (on Mac OSX) but stopped working about 6 months ago . Could you send me the link to EncoreBasic? I'd run it on Windows 7 under Parallels on my Mac, since I presume there isn't a native Mac version. Much appreciated!

Losing one night's data shouldn't be a big deal. Possible sources of the problem: 1) Card not inserted properly in SD slot. Since it wrote something to the card, this is unlikely. Format and try again. 2) Card is corrupted. Try formatting the card and try again. Just put it into the machine, wait a...