I am working on a site and every night when I get to the end of the work, when I preview it on Google Chrome, the last four images I have worked on disappeared. I save my work constantly, and I have even tried doing "save as" and renaming it. I have cleared my cache, and I have exported it and the images are not there. This has been happening since I downloaded the newest version of the software. I even tried opening in the previous version, and the images are there but again, when I preview or export, they're gone. I don't know WHAT to do! :'(

Please zip up your .rsd file and post it for us to see. And if you have your work uploaded, let us have the URL.

Make sure you don't have a break point set and have them to go to Display:none.
Also see if you have the Show Hidden items unchecked or checked on the layout tab.

Thank you so much! The problem was indeed on a break point.