| | Re: Unable to Display File in Pictures
"media card is secured by another device. Unable to access encrypted file." points to a different BlackBerry having created the encryption. You can go into Options > Advanced Options (or Device on OS7) > and either Memory or Security to reformat your memory card. It will wipe everything clean though, gone forever.
Buying a new 2GB card might be better. They're pretty cheap now, only a couple bucks.