Beware the word 'Haxie' - it's just a clever way of saying Hack! Why hack your OS when 'Classic Menu' does exactly the same thing, but leaves your OS well alone.
A plethora of unstable Mac OS X systems have been caused by the APE plugin - so I'd steer well clear of anything that uses it. Shape Shifter is another 'Haxie' that can kill your system - beware the Hacks!