I have a 2011 MacBookPro and was running Sierra with Lightroom Classic CC 7.4, Epson 3880. No printing problems ever. I upgraded to High Sierra and problems started. The printer will not switch from Photo Black to Matte Black to of Lightroom. I subtracted and added the printer, dowloaded and or upgraded the drivers, turned Lightroom on and off, reloaded the paper profiles, manually switched from Photo Black to Matte Black, sent the file to another Epson 3880 my partner uses. Nothing works. I realize most of you have moved on to Mojave and Lightroom 8 but if anyone had these problems previously I would appreciate an ideas. I also use Hahnemule papers but also tried some Epson Luster. Results are horrible.