Did you for instance copy a file to the card and did that work? In other words: did the eDGe worked with your card or did you try to move the library to a blanc and unused card? I ask this because it was mentioned in the forum that in the past cards were not always properly formatted. So before moving the library (an importent oparation) I suggest to check if the eDGe really is confortable with the SDcard. (Sorry if my English isn't very clear. It's not my native language. I just try to find the right words)