Apparently, some have problem running the new version 0.25. It seems most have this problem because of a bug in Ogre 1.2RC1. This concerns expecially GeForce3 and GeForce4 owners. Hopefully, with some luck, Ogre 1.2RC2 will fix this problem. I will prepare soon a new RoR 0.25a package that will use Ogre 1.2RC2 instead of Ogre 1.2RC1.
See you soon!