Mac update to 1.5 prerelease problems

i have got VERY angry at this new update, for on a mac, i tried all the methods, magiclauncher, all of that. Searched ALL over the internet, and no help has popped up. has anybody know anything about how to fix this error report?


Fatal error occurred (4): /users/---------/Library/Application support/minecraft/bin/minecraft.jar retrieving: lwjgl_util.jar 17%
mac. PLEASE help, i have got no way to access minecraft, as i set it to force open and it stuck? =( please help me.