Latest Media Encoder version. I've created the LUTs Creative and Technical folders as required in the 2019 versions for Premiere Pro and Media Encoder to recognize Lumetri looks. All it good in Premiere's Lumetri panel, but the Lumetri Looks are not showing up at all in Media Encoder - either when creating a preset or trying to apply a look to a clip. Selecting a non-default Look causes the UI to flip immediately back to None, and then actually does affect the shot - but in a horrible way not at all in line with the actual Look.
Furthermore, this makes it impossible to create LUTted Proxies from Premiere - essential when working with Log footage - as it is not honoring the LUT at all.