Failed to put transport message, retry number number
The Client has attempted to put a transport message to a window owned by the Client application. This has failed, the most likely reason for this is that the message queue associated with the windows Client application is full.
The message is written to the trace file if tracing is enabled. The Client allows windows to process messages in the queue and then tries posting the transport message again, a number of times.
Try using SetMessageQueue to increase the size of the message queue.