Nik Software Complete Collection 64-bit (2010/MAC) | 743MB
Works on Cs5, Aperture, (lightroom version included but not tested). All sn works, Must be blocked with Little snitch, just in case.
en you install-> make sure, you do not run CS5, Aperture..etc
I have noticed only one problem with sharpener pro in Aperture:
Raw presharpener works only 32 bit. Output sharpener is 64bit.
No problem noticed in cs5.