tintin++ doesn't distribute executable files. They give out source code, which you have to build yourself. Which means you have to have Xcode and the command-line utilities installed. Xcode is a free download, but it's ginormous. I could send you my executable (tt++) but I built it on Mountain Lion so it may not work on Yosemite.

Also, tintin++ does some weird stuff with CF. I find that when I'm spam walking around the room titles will "overwrite" my prompt. I think I raised this as a "bug" on the tintin++ forums like...8 years ago...and they said it was working "as designed" and it was CF that was weird. But every other mud client handles CF properly. So, bad on the tintin++ devs.