[Rangerdave]

i have been dealing with some goofey stuff here as well. on and off more and more people are coming into this problem, well sorta this problem.

have you tried taking out the sd card and then plugging it in?
that worked for me a whole bunch of times.

i then found it was some software on the card as i copied everything off the card and formated it, it then worked everytime with the card in. for what its worth