Thank you! After I uploaded the changed file, every
single image that has been posted in the gallery came up in the Last day's images and Last 7 days images (I didn't try the 14 day one), so I changed it back.
I think I need to upgrade... can you please tell me how I can do that? I'm on a new computer since I downloaded and installed the software on my website, so I don't have the documentation easily at hand.