Fixed hcustom on Windows to once again work for building USD plugins with the `-U` flag.

Fixed a bug in the APEX Animate viewer state where the motion path could evaluate incorrectly after moving a key, binding it to another control, then moving another key. Fixed another bug in the APEX Animate viewer state where a "Controls not added to active layer!" message would appear after moving a control on the motion path while a layer other than the base layer was active.

Fixed a crash caused by trying to re-order the instances in a locked multiparm.

Fixed an issue where the Cop Path parameter of the Image ROP would be disabled when the node had an input.

Fixed helpcard for Karma Pyro Fire Color VOP's "Color Mode" parameter.

Add support for constructing FloatRamp and ColorRamp constants in APEX Script.

Allow geomprop reader to use primvar named 'Ce' in karma CPU. Previously this prevented shader from compiling due to conflict with existing shader global.

Fixed APEX Scene Add Animation and APEX Scene Copy Animation to avoid creating packed folder files with spaces in the paths. If a path has a space, APEX Path Patterns can't be used to select a file even with the full path because the space character is the pattern separator.

Fixed a bug in the APEX Animate viewer state where changing parameters on upstream nodes would cause the geometry to flicker or disappear.

Fixed a bug in the animation graph editor where there were sometimes visual noise surrounding text.

SDF VDBs and Volumes will update in the Vulkan viewport even if only the primitives changes, such as with an OpenCL SOP.

Fixed a bug in the RBD Guide Setup SOP which would capture the wrong __orient on packed prims.

Reduce overhead of loading textures when the Vulkan viewport is active

Fix a MotionMixer crash when switching the Output mode from 'Animation Clips' to 'Shapes'. There was a bug in the way the Packed Folders file map was cleared.

Fixed a bug where the APEX Animate state would endlessly throw errors if a constrained control was baked while one of the constraint's controls were selected.

When Initializing Parameter from a USD Prim, empty relationships on the prim no longer raise a python exception.

Fixed a bug where deleted Animation Catalog folders would reappear as empty folders after reloading the catalog.

Fix bug where trying to set the packed primitive pivot intrinsic with less 3 values would have no effect. Instead, it now overwrites just the given component values.

Fix uninitialized values from being introduced when setting a packed primitive's transfrom intrinsic with a list of less than 9 values.

The heightfield material now imports parameters from the default material if no material is assigned to a heightfield (eg, diffuse color, roughness).

Denoising now works in the Flipbook ROP, and is automatically enabled when needed.

Fix QuickStart example code to work with PySide6.