I´m running really crazy things through my Epson 3880 and 9890 printers - I´m printing on glass sheets which are coated with a special ink-receptive layer. I had lots of errors to manage, before I got my first usefull print.
Are you sure that the 11880 Printer is supported by QTR?? I cannot find any curves in the QTR files for it, I´ve found one Folder but no profiles.
I´m printing from Mac/Mavericks through Print Tool and QTR.
Please check the Settings in QTR, if they are really dedicated to the 11880 Printer, on the other Hand you should contact Roy Harrington directly in that issue.