Hi Rocco,
I have not submitted a bug report yet.
I am doing more testing and just used POE::Wheel::SocketFactory to create the client in the WX app.
It connects to the server created buy another POE::Wheel::SocketFactory based executable, but client does not fire SuccessEvent. Server's SuccessEvent gets called.

Again with another process with the normal POE Loop, it's working as expected.

I thought the info would be enough for someone who had the same problem before. The OS is Windows 7, when I have some time, I will test in Linux as well. Bad things are happening only on Windows!