I have a similar problem on my OSPi (Model B) as @JohnC running the new unified hardware. I will get the “Network Error” message after a couple of hours of the pi being on. This happens on both the local and remote connections. I have correctly set up port forwarding. After it happened, I logged in the the pi via ssh and checked to see if the OpenSprinkler executable was running with:
gprep OpenSprinkler
but it wasn’t running. As soon as I ran the program again with:
cd /usr/local/OpenSprinkler
./OpenSprinkler
the app connected and the “Network Error” message went away. It seems the app is shutting down on its own? Is there is a log file that I could find to give clues as the why this is happening?