I had an issue after installing the Java Console for 7.7.1 on my windows 7 desktop. I would double click the icon a dos window would show up and then close almost immediately. I searched around and didn't see anything that had the solution so I kept poking around. What I found was this; in the setconf.bat. The file had a couple of lines with two back-slashes in the path. i.e. ( \\ ) This was causing nbjava.bat not to be able to find javaw.exe in the path. I replaced the double backslashes with single backslashes, and tada it started working. I am not sure if this is an issue with every iteration of the java console or just my dumb luck. I hope this will help someone else with the same issue.