I'm not certain but I recall reading somewhere that if the card was put in a windows system with specific OS I think it was 8.0 or 8.1 that it wrote a file to the card if it wasn't locked and that would cause the proprietary software to stop reading the card but sleepy head would still read it. Somewhere on a thread someone mentioned this, as I don't have that system I didn't pay much attention.
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That windows problem would make sense why it worked one day then quit but with that issue the S9 would want to reformat card because of extra file. And that was avoided by locking the card. So this may be different since it is just with Resmed's program, hope you get it figured out.
Doc J (despite my nickname I am not a doctor)
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Thanks for the links, archangle....my case is a little different. The S9 and Sleepyhead don't have any issues with the card....only ResScan.
I may just download the data to Sleepyhead tomorrow morning, reformat the card and then remove the "hidden directory" Win 8.1 writes in and see if that fixes the issue. If not, my new DME has already indicated he'll order a new card for the machine.
Most people find that any SD or SDHC card will work fine.
A few people find that SDHC cards won't work.
I haven't heard anyone say that you need an actual ResMed card (other than ResMed.) There's a link to ResMed's statement in my signature line.
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If it's midnight and a DME tells you it's dark outside, go and check it yourself.
Ok...this is a wth moment with ResScan. Apparently my last wipe/format that it claimed didn't take took. It errored on me the last time I tried, but this time....fine as can be.
This totally deserves a :picard: for a facepalm smiley.