There is one bug in the NetBeans IDE that has been my nemesis ever since upgrading to Windows Vista 64-bit back in the day: #177820. In short, this bug means that no output is shown when an application is executed with a 64-bit JVM. There is luckily a work-around – setting up the IDE to use a 32-bit JVM even if you are running a 64-bit operating system.
The great news is that this issue has been fixed in the NetBeans 7.2 development builds (since 17 March 2012) for Ant-based projects! A big thanks to Jiri Rechtacek for this fix! 😀
Edit: In my excitement about this fix I forgot to mention that this is specifically for NetBeans Platform applications. 🙂