More information on this problem:
I ran SimConnect Diagnostic Output and when starting FSX with SimpleCam this is what I get:
0.00000 SimConnect version 10.0.61259.0
0.00219 Server: Scope=local, Protocol=Pipe, Name=\\.\pipe\Microsoft Flight Simulator\SimConnect, MaxClients=64
0.00371 Server: Scope=local, Protocol=IPv6, Address=::1, Port=57610, MaxClients=64
0.00461 Server: Scope=local, Protocol=IPv4, Address=127.0.0.1, Port=57611, MaxClients=64
9.55622 Exe Launched: Path="G:\FSX\Utils\SimpleCam\AivlaSoft.SimpleCam.exe" CommandLine="" Version="1.0.11.0"
And that's it, end of output.
No further connections, errors, nothing.
There was no further communication between SimpleCam and Simconnect as far as I can see.
And none of the arrow keys moved anything unless I just don't get how it's supposed to operate.
Thanks
John