[mrtg] Can't create cfg file on Cisco Pix 515

[Kevin Wong]

Hi,
I am experiencing an issue trying to create the cfg file.  See below
error below.  Can someone point me in the right direction to get this
resolved?  


SNMPWALK Problem for 1.3.6.1.2.1.1 on public at 192.168.1.2::::::v4only
 at cfgmaker line 950
WARNING: Skipping public at 192.168.1.2: as no info could be retrieved

Thanks very much.

Kevin