Recently, Autodesk has released Service Pack 2 (SP2) for 3ds Max 2012 and 3ds Max Design 2012 – is a cumulative update, that includes various fixes for issues with stability and performance based on customer feedback.
In comparison to previous updates, SP2 now also includes numerous bug fixes for MassFX – new PhysX SDK based physics simulation system, that has replaced Reactor in 3ds Max 2012.
- Fixed rollout state changing to Advance.
- Fixed order of rollout menus.
- Very small objects used in Composite mesh generation no longer cause a program error.
- Changing the high-velocity collision minimum speed value now works correctly.
- The Sleep setting in the World tab no longer causes a MaxScript error.
- An nvpx.ExportPhysXScene error dialog has been updated to be easier to understand.
- Bake now works when the scene contains Bipeds.
- Having the Dynamics Explorer or Scene Explorer open no longer negatively affects previewing the simulation.
- Remove Skeleton now removes all Kinematic Skeletons, not just the first one selected.
- Calculate At Current Frame now works correctly.
- The Rigid Body modifier UI no longer redraws multiple times when opening.
- The inflation value in the Multi-Editor now supports negative values for convex mesh types.
- Selecting and moving MassFX constraints now support the type-in transform.
- Using a Plane with box mesh type now simulates with the correct collision mesh shape.
- You can now Undo the Convert To Custom Mesh function.
- Rigid body collisions now behave correctly with back facing geometry.
- Undo now works after grouping bones in a kinematic skeleton.
- The MassFX SDK now correctly supports contact reports.
- Creation of a new mesh in MassFX rigid body can now be undone.
It was also mentioned that remaining issues, like incompatibility with PhysX engine in Thinking Particles plug-in, will be solved in upcoming hotfix.
You can download Service Pack 2 for 3ds Max 2012 from this page
Note: It is highly recommended to uninstall 2.61 PhysX plug-in (if you have one installed) before applying SP2. It can be safely re-installed after.