Download: https://www.moddb.com/games/return-to-castle-wolfenstein/downloads/rtcw-axis-player-mod
All previous versions have been replaced by these two new versions.
RealRTCW Mod version: https://www.moddb.com/downloads/rtcw-axis-player-mod-realrtcw-edition
Vanilla game version: https://www.moddb.com/downloads/rtcw-axis-player-mod-vanilla-edition