I've just check my recent ti3 file and this is exactly this! Damn how it is possible that there isn't even one post about it here on argyll list! I've lost 3 days and over 24 pages trying to figure out what is wrong :( Do you know maybe if v1.4 works under Win8 x64 ? Thanks for prompt answer Jacek Date: Fri, 20 Sep 2013 22:56:59 +0200 Subject: [argyllcms] Re: Argyll 1.6.0 - Shallow blacks on Epson 3880 From: serhat@xxxxxxxxxxxxxxxx To: argyllcms@xxxxxxxxxxxxx There is a BUG with 1.6 ColorMunki ArgyllCMS Drivers discussed here http://www.nifty-stuff.com/forum/viewtopic.php?pid=66874#p66874 http://www.luminous-landscape.com/forum/index.php?topic=82171.0 http://www.luminous-landscape.com/forum/index.php?topic=82133.0 just revert to 1.4 and reread your patches