HPSIM not seeing SMA Generated Traps

[Rob Buxton]

Hi ALl,
HPSIM is working just fine except it does not see SNMP Traps generated from our Storage Management Appliance.
I've registered the cpqhsv110v3.cfg file via mxmib.
Using an snmptrap utility I can see that SNMP Traps generated from the SMA are getting to the CMS Server.
If I use the HP Management Agent GUI to generate a Trap from the SMA Server, HPSIM sees the generic trap.
But the traps generated from the SMA do not trigger anything within HPSIM.
What have I missed as I'm sure this should work.
Event Filtering has the Allow Unregistered events checked and just a * for the SNMP Hosts.

Any hints appreciated.