Found my old projects a little broken

Hello, blen4webers:

I have been out for quite some time and have not been working in my blend4web projects. I have left them in github and the live view are in github.io too. Today I have tried to view them and found when I enter the scenes the camera keeps going backwards without touching any key (almost everyone are first person view, eye view if I remember well). Do someone khow what is this about? Does it have a simple solution or am I busted?

A couple of the projects are here:
https://marcoscalvi.github.io/GuitarPresentation/
https://marcoscalvi.github.io/GuitarBeach/

Any help welcome
Thank you in advance