What do you mean dead? It works fine here, I just cliicked it to get the following quote:
The USB Frameworkis a distribution package containing a variety of USB related PIC18, PIC24F, PIC32 firmware projects, along with other USB related drivers and resources intended for use on the PC. All release notes are included in the .zip file bundle.

Demos include Device CDC demo, Printer demo, bar code scanner demo, CDC serial emulator, device composite HID and mass storage, generic driver demo, HID mouse demo, HID keyboard demo, SD card reader, SD data logger, thumb drive data logger (host) and much more
My guess is you'll find Microchips USB Bootloader somewhere among those files. If it's not the Microchip USB bootloader you're looking for then obviously you won't find it there but then it would be good if you told us which one you're looking for.

/Henrik.