I upgraded to ver 3.1 this evening and now I can't get the shortcuts to work. I see a command window come up briefly then it goes away. I tried manually running the rungui.cmd file in the program directory and it does the same. The only program I can get to run is "OpdsOutput-3.1-SNAPSHOT.jar". That seems to bring up the full program and I can then run it. Is that the normal main program file? I don't remember it that way.
I tried this also on my laptop. First I successfully brought up ver 3.0. I then closed it and installed ver 3.1. Now it doesn't load on that computer either unless I navigate to the folder and run the snapshot.jar file.