Envy Photo 7100. Installed brand new tricolor cartridge, did alignment, then got message that cartridge not installed correctly. Reinstalled 3 times. Found post about cleaning contacts on both printer and cartridge and printer reset. Did that twice. Plugged in old cartridge and no issue. I then noticed that the difference between old and new was that the upper left and right corners of new had hole with a copper(?) inside while new one did not.
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