People having problem with unhiding their camera roll, try this

I heard a few people having problem with unhiding their camera rolls. Well not to worry about, your pics are still safe and inside your Phone. Try the following guide to unhide your pics.

if you are on windows, try unhiding the files and folders from Folder Options>View>Show Hidden Files and Folders.
And if you are on Mac, types these commands in Terminal and then SSH again into your iPhone

FOR MAC
defaults write com.apple.finder AppleShowAllFiles TRUE
killall Finder

Now follow the steps below

ssh into your phone, navigate to /var/mobile/Media/DCIM/
100APPLE and there will be a folder named (.100APPLE) , this is where your pics are, now copy all the pics from this folder to /var/mobile/Media/DCIM/100APPLE and all your photos will be back

Follow these guides on how to SSH into your iPhone. SSH into iphone means to access the underlying iphone directories.

http://iphoneoverdose.com/2008/guide-on-how-to-connect-winscp-to-the-iphone/

Then follow this to SSH into your iPhone.

http://limitededitioniphone.com/windows-guide-to-using-winscp-with-iphone/

Best of Luck :)