This game is written in TADS 3 which, being still under development, is a somewhat moving target in terms of releases. What this means for you, the player, is that you might not have the right interpreter, or the right version of the interpreter, to play this game. If so, don't look on the if-archive, as that has a somewhat out of date version of TADS 3. Instead, if you're on Windows or some unix-alike, go to the TADS 3 download page (http://www.tads.org/t3dl.htm) and download the interpreter from there (unix platforms will need to compile it themselves, of course, although I can send you a linux binary if you need one). Macintosh users should head over to http://www.hypertads.org and get the interpreter from there: it's not quite the latest version but it should still be playable.