[mrtg] MRTG cfgmaker / can't resolve "Options[_]" to IP address

[Montoya]

Hi

I try to configure MRTG, but when i run the cfgmaker whit the IP in the 
same server appears this
what can i do to resolv this
Thanks ..

# ./cfgmaker --global 'WorkDir: /MRTGHSBCM/'--global 'Options[_]: 
bits,growright' --output /MRTGHSBCM/BladeH07/cfg/Blade1000-H07.cfg 
public at 164.4.29.150
Error:
  can't resolve "Options[_]" to IP address
 at /usr/local/mrtg-2/bin/../lib/mrtg2/SNMP_util.pm line 428
SNMPWALK Problem for public at Options[_]: bits,growright:::::v4only
 at ./cfgmaker line 950
WARNING: Skipping public at Options[_]: bits,growright as no info could be 
retrieved