Looks like you dont used the patched cgminer version.
You can also use BFGminer, which includes automatic detection of this boards.
Btw (not the problem here): Did you changed the chipcount to 16 in the code? The precompiled one is for the 10 chips board.
@form
I know that the driver for gen2 Avalon needs to subtract 0x180 from the returned nonce but are there any other changes?