Hi, I just started trying to mine last night.  Using two Butterfly Labs ASIC Miners. 

It says none of my shares are being accepted and when I look at my pool stats everything has been rejected as well..

A:0 R:5 HW:13

How do I fix this?  My pool is middlecoin. 

Every once in a while I get a message that says "ICA1: invalid nonce - HW error"

If anyone could help I would be very grateful.