Because they are crap :-)
Use this link:
http://forums.bungie.org/story/?read=42331
: As the subject line says - I can't get the more recent (nightly) AO builds to
: work. Neither the NIB nor SDL versions. All that happens is that I get the
: brief "zoom" effect from when an app opens and then I'm back in
: Finder. Somebody on the Aleph One chatroom suggested I should put the SDL
: frameworks in the Library folder. However, there are no SDL frameworks in
: the most recent builds, and I'm pretty sure I have the needed SDL
: frameworks in the Library folder from when I was trying to compile AO on
: my own: SDL_net.framework
: SDL.framework
: Trashing the AO prefs made no difference -and a new prefs file did not
: appear.
: Ideas, anybody?