Bandwidth Monitor - E2005

Bandwidth Monitor - E2005

Hi,
 
When trying to add a device to bandwidth monitor I get the following error message,
 
- E2005: Not able to retrieve complete data from the MIB.
 
Any ideas why I receive this message. 
 
I am able to do an snmpwalk on all OIDs from the CLI on this box and from other machines, just unable to add the device to bandwidth monitor within OpUtils.
 
Thanks