i just bought this 16 GB micro SDHC card for my Sansa e280v2: http://www.amazon.com/SanDisk-SDSDQ-016G-A11M-Sandisk-16GB-Microsd/dp/B001F6YRNO
I have Rockbox installed and when I first put the empty card into the player and turned it on, Rockbox displayed "<microSD1> in the file viewer
Later I connected the player to my computer and put with Mediamonkey some music on it. Everything worked fine until suddenly the connection got lost and the computer couldn’t access the card.
Also Rockbox doesn’t display it anymore.
So I went back to the original Sansa firm (03.01.16f), but still the same. Without Rockbox it doesn’t even boot when the card is inside.
What is goiong on?