Service Pack 2 for Max 9 is now available in 32 and 64 bit versions: “Service Pack 2 includes a number of fixes specific to Windows Vista, as well as fixes across several functional areas including Animation, Backburner, Batch Rendering, Biped, Editable Poly, Editable Mesh, Hair, Materials, Maxscript, mental ray, Reactor, Render to Texture, SDK and UV Unwrap.”
Update: if you’ve installed the Production Booster, you won’t be able to install SP2 on top of it. You’ll need to re-install Max, install SP1 and 2, and then install the Production Booster.
