not able to paste to a sub-folder

Since recent updating I have not been able to paste pictures to a sub-folder. This is immensely annoying as to get the pictures into a sub-folder I have to do each one individually- hundreds for holiday snaps because I am not able to add photos via i-photo to my blog as the i-photo only gives me the whole i-photo file as an option. I think this set up is rubbish. How do I change this so that I can paste to sub-folders The same goes for documents too. Just discovered that I and not able to drag lines of text with this question.