Due to the updates applied to the Source engine over the last couple months which broke the latest version of HL2CTF with no fix available to make 1.71 playable, the development of the mod has been revisited and is currently under way.
The current version of the mod has been successfully moved to the Source SDK which will allow anyone to play the game who owns at least one Valve game including but not limited to HL2 Deathmatch.
Furthermore, as development progresses, you can keep up with every step of the progress via the following sites which we will be posting news and information to on a regular basis:
Facebook HL2CTF Group
Login to Facebook
HL2CTF Steam Group
HL2CTF Twitter Page
HL2CTF YouTube Channel
HL2CTF MySpace Page
And, of course, check our forums at forums.hl2ctf.net to join in with the players and access to upcoming playtests and more!