I have been working on a 6509 with Sup engine SUP2-GE, version 12.1(8b)E11, that does not recognize the new 10/100/1000 48 port card. When listing modules it is unrecognized and power is off. Other error messages are: failed to read serial eeprom of line card in slot X and poser mgmt sprom failure for module X. The 10/100 module is read with no problem. Any suggestions?