I have been trying to use the Set Editor for a Roland FR-3X for the first time. I tried some of the tricks mentioned in a thread (made sure I have a new enough version of Java installed, tried opening the file from the C drive, etc) but when I open the jar file, I very briefly see a command line screen appear then disappear. I get no errors, at least none that I can see. And the User Interface for the app does not show up. This was all attempted on a Windows 7 PC. Any advice about how to get this to work? Could it be that my virus protection software is blocking the jar file from opening?