When I first got my Dx a cple yrs ago, all I had to do was plug my phone to my computer & the pics & videos automatically transferred to my computer. Now, I pretty much have to do everything manually. Can someone help me with what may be wrong? I select mass storage ass I'm instructed but that doesn't work. It used to me I plugged it to my computer & pics & vids started downloading & I received message - this has already been transferred - skip or override. Nothing now.