printf isn't printf-ing. Help!

[Meandmyself]

the wierdest thing is happening. When I do this;

  /*way up at the beginning of the file...*/
  char counter = 0;

  /*in process_data_from_master_uP*/
gyroin = get_analog_value(rc_ana_in_01);
if (counter > 40) {
     printf("%d, %d \n",gyroin,get_analog_value(rc_ana_in_01));
     counter=0;
}

counter++;

printf prints out nothing. But this:

printf("%d, %d \n",gyroin,get_analog_value(rc_ana_in_01));

works fine. What's going on here?

BTW, this is all happening in the context of a larger problem that is I can't get the Gyro from last year to send values to the Edubot. When it does print, it says 0,0 no matter what.

It also has never printed the initialization message in user_initialization(). What's up with that?