When I run a program with Java Web Start, it doesn't show me the errors

I configured Netbeans to run a program with Java Web Start. The program compiles fine, but then when it runs, it tries to load a file (a sound clip) that was not in the place it expected to find it in. Here Java Web Start just pauses. It doesn't show me any errors, either in the output tab of Netbeans, or in the Java Console (which is what it shows me when I开发者_如何学Go open the html page and run it as an applet).

Any idea how I can configure things so that errors are displayed?

Whenever you deal with Java WebStart it is really nice to enable the Java Console (see Control Panel -> Java under Windows), and turn on full debug log.

Am I right in assuming you are looking for a stack trace?