Two paches have been released for Re-Volt: the official 0916 (Steam // GOG), and later the unofficial 1207. (community driven)
Notice: the Patch 1207 has to be applied to Re-Volt before you can use WolfR4.
Demo, non-patched (ie. v1.0) or 0916 patched version of Re-Volt are not supported, and will never be.
https://fr.wikipedia.org/wiki/YggTorrent (I'm hosting a proper version for those interested)
http://jigebren.free.fr/games/pc/re-volt/wolfr4/ (original author website)