FindConnectionPoint returns 0x800703e6 Invalid access to memory locati

[BillyBob10000]

I have LOCAL_SERVER and a test client. When I run the
client under the debugger and run the LOCAL_SERVER I see that
h = IConnectionPoint* p->FindConnectionPoints(IID, &pp)
returns h = 0x800703e6 "Invalid access to memory location"
and a NULL pp.

When I run the LOCAL_SERVER under the debugger and run the
client, I can see the FindConnectionPoints implementation
get called and the assignment made to pp. But as above,
when it gets to the client the pp is NULL.

I have a similar example running fine as an IN_PROC_SERVER.

Any ideas, I am hooped. I can't trace any deeper into the
system code to try and get to the bottom of it.

Thanks a million,

BillyBob10000.