4) I've removed Java Studio and reinstalled it but still get the same error.Have you also ensured that you are not reusing the user directory from previous install? Please take a look at http://blogs.sun.com/karthikr/entry/jse_directories
Java Studio Enterprise 8.1 is itself built on top of NetBeans version 5.0. NetBeans is an ide developed as opensource at www.netbeans.org; it is extensible ide and so add-on modules can be developed to run on top of netbeans. And that is what JSE8.1 does; JSE 8.1 is NetBeans 5.0 plus several add-on modules (like UML etc). The latest stable version of NetBeans is 5.5.1 and NetBeans 6.0 is currently under development with milestone 10 being the latest release. Home page: www.netbeans.org Download: http://www.netbeans.info/downloads/index.php (From the main page, you can also download several packs which are addons that provide various functionality). Docs: http://www.netbeans.org/kb/index.html Docs on EE apps: http://www.netbeans.org/kb/trails/java-ee.html Further community resources (mailing lists, issue tracking etc) : http://www.netbeans.org/community/index.html wiki.netbeans.org NetBeans download is free. And since it is developed as an opensource project, the source is freely available under CDDL license.