This is the second time this has happened to me in about 6 months. Ink light is blinking for replacement of color cartridge (which I don't use -- I print in black ink only). I just installed a brand new HP78 color ink cartridge a couple of months ago. Haven't used color ink at all. Now it's reading empty and I'm not able to print in black either because it wants me to replace the color. Any help would be greatly appreciated. I'm so frustrated by this.
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