iOS Cannot Decode m3u8

I have a live stream that in the past was playable on iOS devices (using the URL for the m3u8 file).  Now, when I try to view a live stream on an iOS device, I get a message that says "Cannot Decode".  I am still able to use this file on Android devices though.  Does anyone have any idea why iOD devices would not be able to play this file? 

The livestream is being encoded by Adobe Flash Media Live Encoder 3.2 and we are using Adobe Media Server 5.  I followed the steps here to get everything setup intially (when it was working).  Once it stopped working on iOS, I verified that none of the settings had changed.