https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Problem-with-new-ink-carts/m-p/190413#M44966 <P>My Pixma MP640 tells me two cartridges I have just put in are not installed properly. But they <U>are</U> in properly.</P><P>My iMac went in for repair and since getting it back, I have restored from Time Machine.&nbsp;</P><P>I am wondering if it has downloaded an updated&nbsp;printer driver.</P><P>I use Canon compatible cartridges and have never had a problem with them. Now I am wondering if Canon have added a code to the latest driver software that prevents compatible cartridges from working.</P><P>Can anyone please advise?</P><P>Regards</P><P>Huguenot</P><P>&nbsp;</P> Sun, 30 Oct 2016 12:08:59 GMT Huguenot 2016-10-30T12:08:59Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Problem-with-new-ink-carts/m-p/190413#M44966 <P>My Pixma MP640 tells me two cartridges I have just put in are not installed properly. But they <U>are</U> in properly.</P><P>My iMac went in for repair and since getting it back, I have restored from Time Machine.&nbsp;</P><P>I am wondering if it has downloaded an updated&nbsp;printer driver.</P><P>I use Canon compatible cartridges and have never had a problem with them. Now I am wondering if Canon have added a code to the latest driver software that prevents compatible cartridges from working.</P><P>Can anyone please advise?</P><P>Regards</P><P>Huguenot</P><P>&nbsp;</P> Sun, 30 Oct 2016 12:08:59 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/Problem-with-new-ink-carts/m-p/190413#M44966 Huguenot 2016-10-30T12:08:59Z