Assorted fixes and improvements to CAT and Biped workflows.
"Baby Dragon" courtesy Norberto Aguilero
This update address numerous functionality and stability improvements for CAT (Character Animation Toolkit) and BIPED with a view to improve animation workflows, address long-standing issues and customer suggestions.
The following are some of the updates addressed in this release:
- FBX warning (CAT & Biped)
- An error that caused FBX to show an inaccurate "Unsupported controller" warning for both CAT and Biped controllers on export has been addressed. CAT and Biped controllers have always been supported but now they no longer generate FBX warning messages.
CAT fixes
This update contains many CAT-specific bug fixes, including the following:
- A problem around the disabling of CAT rig evaluation during scene loading, deleting, or cloning has been fixed. This problem caused some update issues as well as Viewport glitches.
- In the CATMotion Editor, issues surrounding using a path node or snapping foot prints to a ground collider in the around have been fixed.
- Issues related to buttons used to open controls in a Track View in the CATMotion Editor have been fixed.
- A problem with leftover foot print nodes when undoing after cloning a CAT rig has been fixed.
Biped fixes
There has also been several longstanding Biped issues addressed in this update, including the following:
- Issues surrounding the translation of Biped extra bones when loading FBX animation has been addressed.
- Issues surrounding Biped's MaxScript calls for copy and paste have been fixed.
For a full list of improvements, visit the Animation section of the 3ds Max 2025.3 Update Release Notes.