Error in Snmpv2c Implementation in windows

Hi All,
I am implementing an SNMP agent in Windwos XP. I wrote an SNMP extension agent in version 1 and it is working fine. I tried to implement the same code for V2c (version 2 c), and the same MIB file but it gives me the following errror:

Sent get request to 192.168.3.97 : 161
Request Failed: Get Response PDU received from 192.168.1.1
Error Indication in response: A general failure occured
Errindex: 1

The error is same for all types of requests. I changed the function handling query, from SnmpExtensionQuery to SnmpExtensionQueryEx and also handled appropriate packet types.

Can anyone plz help me out. . . ???? This is critical stage in the project and any asap would be really appreciated.

Thanks,
Daniel