It's also a good idea to create a symbolic link from /var/root to /var/mobile.
ssh into your iPhone and delete the /var/root folder, then type in the command:
ln -s /private/var/mobile /private/var/root
Make sure your camera folder actually exists. Usually when I start from a fresh restore, I take a picture with the original Apple camera program so that it creates a folder. Then I start using Snapture (previously used CameraPro).