Running the latest snapshot, I am trying to rescan a Windows XP box:

A message from the Provisiond NodeScan lifecycle that a NodeScan has Aborted:
The Node with Id: 94; ForeignSource: ; ForeignId: has aborted for the following reason: Aborting node scan : Agent failed while scanning the ipAddrTable : Unexpected error occurred processing ipAddrTable for wendy.internal.opennms.com/172.20.1.26: org.springframework.beans.NotWritablePropertyException: Invalid property 'key' of bean class [org.opennms.netmgt.provision.persist.policies.MatchingIpInterfacePolicy]: Bean property 'key' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

This is the walk for the table:

$ snmpwalk -v2c -c public wendy ipaddrtable
IP-MIB::ipAdEntAddr.127.0.0.1 = IpAddress: 127.0.0.1
IP-MIB::ipAdEntAddr.172.20.1.26 = IpAddress: 172.20.1.26
IP-MIB::ipAdEntAddr.192.168.122.1 = IpAddress: 192.168.122.1
IP-MIB::ipAdEntAddr.192.168.140.1 = IpAddress: 192.168.140.1
IP-MIB::ipAdEntIfIndex.127.0.0.1 = INTEGER: 1
IP-MIB::ipAdEntIfIndex.172.20.1.26 = INTEGER: 65541
IP-MIB::ipAdEntIfIndex.192.168.122.1 = INTEGER: 3
IP-MIB::ipAdEntIfIndex.192.168.140.1 = INTEGER: 2
IP-MIB::ipAdEntNetMask.127.0.0.1 = IpAddress: 255.0.0.0
IP-MIB::ipAdEntNetMask.172.20.1.26 = IpAddress: 255.255.255.0
IP-MIB::ipAdEntNetMask.192.168.122.1 = IpAddress: 255.255.255.0
IP-MIB::ipAdEntNetMask.192.168.140.1 = IpAddress: 255.255.255.0
IP-MIB::ipAdEntBcastAddr.127.0.0.1 = INTEGER: 1
IP-MIB::ipAdEntBcastAddr.172.20.1.26 = INTEGER: 1
IP-MIB::ipAdEntBcastAddr.192.168.122.1 = INTEGER: 1
IP-MIB::ipAdEntBcastAddr.192.168.140.1 = INTEGER: 1
IP-MIB::ipAdEntReasmMaxSize.127.0.0.1 = INTEGER: 65535
IP-MIB::ipAdEntReasmMaxSize.172.20.1.26 = INTEGER: 65535
IP-MIB::ipAdEntReasmMaxSize.192.168.122.1 = INTEGER: 65535
IP-MIB::ipAdEntReasmMaxSize.192.168.140.1 = INTEGER: 65535

Clues?