Yesterday was the third time that I have experienced a print come out of my 2880 with K-7 inks MK and when tried again works fine. What could possibly cause this one time only change. In every case I have used the same settings as these 8x10 matte prints are part of a series. Sample attached. Any ideas!?
I think this is a permissions issue with a specific curve that you were selecting (or you were selecting no curve at all for the dark one).
Re-install QTR and this will fix the permissions and resolve this issue from happening.