the build.xml data int this thread is configured to a specific program (you can see meshPing.alx in the data), use the build.xml data from here instead which isn't hardcoded to any specific app:
>>>Blackberry Netbeans Development
your screenshot looks fine though, anyone else got a clue?
[EDIT] - seems you're compiling okay now? but not getting your app on the device? - have you added the name of your main class (that extends UiApplication) as the midlet in the application properties in netbeans?
[EDIT2] - the build xml may have been due to a space creeping in during copy and pasting, more info here:
>>>The processing instruction target matching "[xX][mM][lL]" is not allowed