Added new hou.OpNodeType methods for querying the handles bound to a node type (equivalent to ombindinfo in hscript).

Fixed an issue in the Bullet solver where resuming a simulation from a .sim cache could produce different results than simulating from the original start frame.

When the Optix denoiser and OIDN fail to allocate memory, they will now attempt to ask other GPU clients to free memory before failing.

Fixed handling of the "Output Colorspace" parameter in the Karma Render Settings LOP.

Added support for selecting/deselecting constraints in the viewport in the APEX Animate viewer state. Fixed a bug in the APEX Animate viewer state where constraint selection, visibility, and pinned states were being set incorrectly.

Fixed a bug where some disabled radio buttons could still be clicked.

Fixed handling of the "Cancel Render ON No Working GPU Device" parameter in the Karma Render Settings LOP.

Fixed a bug in the MaterialX Transform Vector node in Karma XPU where the results was incorrectly normalized

Fixed a crash related to outputs of collapsed VOP nodes.

Fixed an issue in APEX Script where untyped nulls with an output wired and the corresponding spare input unwired would fail to decompile.

The menu to select AOVs for the variance oracle no longer replaces the previous AOV, but instead toggles AOVs.

Packages - new preload_libraries keyword

• Adding the ability for package.json files to include a `preload_libraries` key, whichis a list of dynamic libraries which should be loaded (dlopen/LoadLibrary) by Houdinibefore trying to install any other binary plugins.

Fixed errors thrown by sliders in Context Options.

Fixed Color Editor sliders text fields that could display black when dragging the sliders.

Fixed a bug where the built-in "Material Name" Cryptomatte layer may produce non-deterministic names when using instancers.

Rig State: Fix a bug where the limb controls did not get properly parented to the root. Make sure that the root allows the joint mapping to be updated.

Fixed a potential crash display apex scenes on some devices

Fix a bug in the Rig State where the number of joints set for splines or fk chains was not matchint up with the set number and dissallow joint chains with less than 2 joints.

Fix Python exception in hotkey editor.

Fixed a crash when displaying apex characters using constraints Fixed a bug where attribute data would be re-uploaded to GPU even though the contents hadn't changed

Fixed a bug in the Apex Animate State where the effect of a constraint would disappear when moving the mouse into the viewport until another action was taken.

Q

Fix a bug in the Autorig Builder SOP the foot ball guide control would dissappear if a foot component was created without a pre existing skeleton

Fixed potential crash introduced in 21.0.464 when applying animation catalog captures.