The OpenVDB Advect Points SOP in Houdini is not working correctly when specifying a VDB Points Group. It has non-deterministic and undesirable behaviour, sometimes throwing an error, others crashing the session. This can be verified in the supplied example scene by enabling/disabling the OpenVDB Advect Points SOP on the right (DW_OpenVDBAdvectPoints2). This has been tested in Houdini 17.0.352.