ScreenSavers not working on Mac OS X Leopard 10.5.4

When the screensaver tries to activate after the preset time, or the screensaver is activated by a hotcorner, the screen fades to black, then pops back to my desktop (including whatever's open at the time, basically the interface that you use when you're using the computer, what comes before the screen saver activates, hard to explain, yet extremely obvious.) Then, it repeats the cycle until interrupted by a keystroke or mouse gesture. When the ScreenSaver system preference is open, the bar to the left where the screensavers are listed is blank white. The same goes for the preview area on the right. The check boxes on the bottom still appear, but the rest of the area is blank. Basically, it looks like the screensavers are gone. After a few seconds, System Preferences crashes. I checked all the folders from the Finder (HDD>System>Library>Screen Savers) (HDD>Library>Screen Savers) (UserName>Library>Screen Savers), and the screensavers are still there, all uncorrupted. I think it was working yesterday, but I didn't notice. I know it was working less than a week ago though. Any ideas?

Message was edited by: AppleExcellency

The paths came up as links due to using brackets instead of parentheses

Message was edited by: AppleExcellency