Canon ip4200 - More than one ink tank of the same colour installed

Hi, I decided to intall cheaper carts on my printer and extracted the chips from the old carts and some worked. I have two now that I have bought genuine Canon carts for but when i install them, the red light keeps flashing on the cart and the amber light on the front flashes seven times continuously. When I try to print I get an eror message saying I cannot have more than one of the same ink tanks installed. Any ideas? Canon say the printer is out or warranty and try turning it off for an hour to reset itself! ( Which didn't work!)

 

Resolved this one although I feel a little silly, I thought I would post the answer as I could not find it on any website.
I asked inkredible.co.uk, who I bought the compatible carts from if they had ever came across this and they said "Hi Tony, The only time I have come across this is when I transferred the chips the very first time I did it. The problem was that I got the chips mixed up. What your printer is saying is that you have 2 chips in the printer that come from the same cartridge. 1 will be the original cartridge. The other will be on the wrong colour compatible. Hope this helps. Regards, Nichola"

The lesson is replace one cart at a time and do not do what I did and think I may as well replace them all as they are all running out. Then I got the chips mixed up. The chip is therefore specific to an individual colour even though each colour is exactly the same shape of cartridge.

You learn something new everyday.!!!