It turned out that I had to change my color ink also - both inks need to be around 75% full per my chat with HP. My color ink was only 25% full, so he told me to change the color ink too -or- change it so it aligns properly and then I can put the old color ink in to finish it. You'll need to keep the full color cartridge away from air, etc. so it doesn't dry out. I just put a new cartridge in and didn't worry about using the rest of the old ink.