I'm using inkgrabber carts on my IP5000 and for years have had no problems. Now it doesn't recognize a new BK6 cart. I've tried 3 new ones with the same result. The printer is supposed to go through a clean cycle when a new cart is installed but this doesn't happen. I've done clean and deep clean 3 or 4 times. I'm on a Mac if that matters. When i check the ink levels in the Maintenance program, the small black column is gray. Any suggestions. TIA
bobk
bobk