Hi dr. sound,
Error 56 is caused by either the number of users OR the system time limit being exceeded. In your case, when you disconnect, it may be that the system time limit is exceeded. It's possible that your real-time program needs more time than you're giving it to reset and be ready to listen for a connection again. I would check those settings, or wait a little bit before trying to reconnect. Hope this helps!
Jeremy L.
National Instruments
Jeremy L.
National Instruments