Functional and timing simulation pass, however registers clocked by Global Clock pin 1 (GCK1) do not toggle.
There is a bug in the iMPACT programming tool that prevents the proper programming of the GCK bit. As a result, registers connected to GCK1 are unresponsive on the device.
This problem is fixed in the latest 5.2i Service Pack available at:
The first service pack containing the fix is 5.2i Service Pack 1.