Autodesk 3ds Max 9 Service Pack 1 includes a number of fixes for Autodesk 3ds Max 9 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. Important: 32-bit and 64-bit versions of the Service Pack are included here. Ensure that you install the correct version:. 3dsMax9SP132bit.msp for 32 bit. 3dsMax9SP164bit.msp for 64 bit. Refer to the Readme for more information. Important Notice There is a known issue running the English versions of 3ds Max 9 SP1 on double-byte Operating Systems.