-106 ERR RT NOT RSPND (Magic xpa 3.x)
A requester was not able to send a request to an engine that was assigned by the broker.
Verify that the engine is alive (e.g. in the Task Manager, according to the PID displayed in the broker’s status window). Call this engine from a command line requester, in order to isolate the source of the problem. (Connections are created and destroyed for each request of the command line requester.)