My sansa media converter did not detect my sansa...

Question

I just got a sansa e280, and I have installed sansa media converter on my computer. I changed my USB mode to MTP and it shows up on my computer as a removable drive, but when I open sansa media converter, the screen shows "no available player" detected. So now I can't add pictures or videos to my mp3...

please help me!
Thank you very much for your time!

help i have to same problem I have sansa fuze I open the media converter but it says no device detected