16F690 MIKRO C - Code loop Problem

Hi,
I cannot get the code listed below to loop. When I load it onto the pic 16f690 only 1 led lights up. The debugger shows PORTC C is being increased by 1 each time. Yet the leds to not light up. Can anyone help? I am using PICKIT 2 to program.


void main(void){
TRISC=0;
while(1)
{
PORTC=PORTC+1;
}
}