AVR-Chat

I'm not sure if I am missing something or if the simulator of the AVR
Studio 4.12 with service pack 2 (or SP1 too) is broken, but in
simulation I cannot seem to get Timer/counter 1 counting in my tiny45 code.

I have TCCR1 = 0x41, and OCR1C = 0xF4, all the remaining registers are
at their default 0 value.  In addition, PRR=0x00, PLLCSR=0x00 and
CLKPR=0x00.

Is there some other bit somewhere I must set to get this counter
working?  TCNT1 remains at 0 when simulator is run.  Haven't gotten any
further to see if the counter is counting in real life.

Hints?  Experience?

Thanks,
Don