Testing this asset on OpenUSD v25.11, there seems to be a bunch of errors reported by the OpenUSD Validation framework. Errors reported are:
InvalidMaterialCollection - Invalid number of targets on material binding — 359 mesh and GeomSubset prims across the scene are affected by this (e.g. </World/dresser_grp/dresserDrawers_geo>, </World/paintSpill_grp/polySurface4>, etc.)
UnresolvableDependency - Found unresolvable external dependency 'textures/<name>.<UDIM>.png' — All 39 .mtlx files in ShdrPlygrnd/materials/
InvalidSubsetFamily - Imageable prim </World/paintSpill_scrnRT_grp/polySurface7> has invalid subset family 'materialBind': Found duplicate index 0 in GeomSubset at path </World/paintSpill_scrnRT_grp/polySurface7/subset>...
Addressing (2) would possibly fix issues related to missing textures as mentioned in #17 as below is the current observation in Houdini 21.0 .

Testing this asset on OpenUSD v25.11, there seems to be a bunch of errors reported by the OpenUSD Validation framework. Errors reported are:
InvalidMaterialCollection-Invalid number of targets on material binding— 359 mesh andGeomSubsetprims across the scene are affected by this (e.g.</World/dresser_grp/dresserDrawers_geo>,</World/paintSpill_grp/polySurface4>, etc.)UnresolvableDependency-Found unresolvable external dependency 'textures/<name>.<UDIM>.png'— All 39 .mtlx files inShdrPlygrnd/materials/InvalidSubsetFamily-Imageable prim </World/paintSpill_scrnRT_grp/polySurface7> has invalid subset family 'materialBind': Found duplicate index 0 in GeomSubset at path </World/paintSpill_scrnRT_grp/polySurface7/subset>...Addressing (2) would possibly fix issues related to missing textures as mentioned in #17 as below is the current observation in Houdini 21.0 .