Can't deliver a picture in Egypt - Adventure problem!!

I know this is an old thread, but I've come across this problem many times, and I think I know the answer to the problem, and its cause.

The thing is, you need to take out of the camera the *very first* photo you ever took of the person or object of the quest.

So, if sometime in the past you already photographed them (or it) the game will only accept that original photograph of the subject.