@TaoManJoe: Hmm, then we'll take a page from Mr Proper's book:
* If you don't have one already, make a backup of your custom screensaver images.
* Delete the linkss folder from your Kindle.
* On the off-chance that something wonky's going on with your jailbreak version, reinstall the latest JailBreak.
* Restart your device.
* Run the latest
uninstaller for the ScreenSavers hack.
* Run the latest installer for the ScreenSavers hack.
* And *STOP*. At no point should you try to inject your custom images (yet).
And report what happens then

.