404 Errors when trying to view pics...thumbs are ok, what is going on?

[msbigbad]

Hello! My gallery is really baffling me right now. For some reason none of my pictures will show. The thumbnails are still there and the files are still on my server but everything you go to view in it's full size sends you to a 404 page!

Does this mean I've been hacked or is there something else going on?

My gallery is at http://loveunchained.com/gallery/

[Nibbler]

Apparently displayimage.php is missing. Updating your gallery will fix that anyway.

[msbigbad]

Thanks so much! Got it fixed now!