I sent a rig off for evaluation and got notes that the legs were collapsed into the body - animator does not own the plugin. I can recreate the issue by unloading the plugin locally and opening the file or by deleting the rrm3FloatMult nodes. The float nodes came to my attention via a warning message when trying to unload the plugin. Working in Maya 2024.2, animator opened in Maya 2023 (not sure specific version)