Firmware flash problem with Atmel Studio 7

Hi, I just finished to assemble a new shruthi and was about to program the Atmega644.
This is what I’m doing, which is the procedure that has been working fine with other chips: I connect my AVRISP MKII to the 6 pin in the board and open Atmel Studio 7, I go to Tools, hit the Device Programming option, and when I hit Read the Device Signature, I get this error:

“Failed to enter programming mode. Error received from tool: Target connector seems to be reversed”

And I cannot continue… Do you know what is happening, please?
Thanks!!