Files locked, Need help..

My file share, local files and temporary history are locked due to me not having an xbox 360 hard drive. thing is, I have the 16GB xbox 360 one and lots of space on it.
All the family setting for content sharing and all that is on so i have no idea what the problem is.
Due to this I can’t take screenshots, download any custom maps or share any of my own.
Some Help or suggestions would be nice.
~Dan