Recently upgraded to OS X 11 and Illustrator 2021 and can no longer choose a "Custom" page size
or choose "Separations" when printing to my Epson 7880 printer. I have downloaded the Epson recommended driver for OS X 11 from Epson and re-added the printer but those two choices remain grayed out. I contacted Epson support and they tell me that it is an Illustrator problem?
I have been printing films for my screen printing business this way for years. Apparently something in
the newer OS or the newer Illustrator has broken the process.
I'm hoping someone on this forum has run into this problem and found a solution.
Its the OS there have been a lot of posts in the Photoshop forums stating the same thing. Something in the latest Big Sur security update buggered the Epson drivers. Upgrading your OS to Monterey resolves it.
Kevin Stohlmeyer Adobe Community Professional/Adobe Certified Instructor