Hi,
Have you built the hardware and have it scrolling messages?

There are two buttons that behave differently with the hardware you produce from the PCB.
The pic program assumes two button pins are pulled to gnd, and the other two are
pulled up.
The change made in the hardware PCB requires all input buttons be pulled high
(or low.. don't quite remember).

Did you build from mrtripoli's PCB artwork, or schematic?