Okay, something is severely broken in 3.4.24. The card cannot be recognized in an iMac running Lion, a MBAir running Lion, a Windows box running Win7, WinXP or a virtualized WinXP or Win7 box. I'd try a PowerBook running 10.4, but Center doesn't run on less than 10.5. Can someone at Eye-Fi post a link to an older version of Center for Mac & Windows so we can at least use the cards we bought? I have a family event on the 5th and need to add a WiFi network to the card. Thanks.