After reviewing your order history, I see you purchased the R3000 refill carts in Dec 2013. Based on the age of the carts, and your explanation, I believe you’re dealing with old chip batteries, which have a limited life of about one year. We have information about chip batterie, and how to replace them, here:http://www.inkjetmall.com/wordpress/product-use/r3000-cartridge-batteries/, and sell new batteries or chips with new batteries here: http://shopping.netsuite.com/s.nl/c.362672/sc.18/category.122639/.f
I haven’t personally used 10.10 yet, but know a few customers have reported using it with good results, though will need to check back to see what printer models + print drivers they’re using, and test for myself to check cartridge function, as well as color and Piezography printing.
[B]** Anyone using Mac 10.10, please feel free to share your experience **[/B]