Marjian probably refers to Marijan Tompa who used to run the site tomaxxi.com where you could download a bunch of cools scripts. My guess is that you or someone downloaded and installed one of his scripts that no longer works.
Ah, that makes sense. Maybe something got corrupted. I do have some tomaxxi scripts and plugins. There is a layer plugin and maybe that started to compete with the object layer options for some reason.
I recently moved to a new Mac and I’ve found various bugs between Sierra and CC2017. I usually don’t have any problems with upgrades.