hit the "Tab" Key and make sure that you see the MPG (not continous or step), led is on.
also, if you used the stock installer, Load the "PoKeys" profile, and make sure you have the "PoKeys.set" at your screen set (for testing), if not load it.
it looks just liek the stock OEM mach3 but you will see a PoKeys button to the right of your dia button, push that button, it will take you to the
PoKeys diag page. There is a lable that says TC (it means Tick Couter), make sure that number is always updating (changing).
scott