nios ii console shows nothing

Hi Cris, I tried to solve those critical timing warnings, but with the SDC file, the warnings appear just with 'create clock' lines. It is just:

# Original Clock Setting Name: CLOCK_50

create_clock -period "20.000 ns" \

-name {CLOCK_50} {CLOCK_50}

---------------------------------------------

create_clock -period "50.0MHz" [get_ports GPIO_1[16]]

create_clock -period "50.0MHz" [get_ports GPIO_1[0]]

I really don't understand why, CLOCK_50 is a real 50MHz clock pin and

when I comment the last two lines the critical warning is still there.

Could you help me?