You mention "Maya2020" but you post in the 3dsMax forum. If it is really about Maya, try disabling the MayaUSD plugin. And notice that this is Ornatrix V4 which is still in beta, you may run into various defects or incompatibilities.
Ivan Kolev (Software Developer, EPHERE Inc.)
E-mail: ivan.kolev at ephere dot com
Discord: ikolev