Must set src.dir Must set test.src.dir Must set build.dir Must set build.web.dir Must set build.generated.dir Must set dist.dir Must set build.classes.dir Must set dist.javadoc.dir Must set build.test.classes.dir Must set build.test.results.dir Must set build.classes.excludes Must set dist.war The Java EE server classpath is not correctly set up. Your active server type is ${j2ee.server.type}. Either open the project in the IDE and assign the server or setup the server classpath manually. For example like this: ant -Duser.properties.file=<path_to_property_file> (where you put the property "j2ee.platform.classpath" in a .properties file) or ant -Dj2ee.platform.classpath=<server_classpath> (where no properties file is used) The libs.CopyLibs.classpath property is not set up. This property must point to org-netbeans-modules-java-j2seproject-copylibstask.jar file which is part of NetBeans IDE installation and is usually located at <netbeans_installation>/java<version>/ant/extra folder. Either open the project in the IDE and make sure CopyLibs library exists or setup the property manually. For example like this: ant -Dlibs.CopyLibs.classpath=a/path/to/org-netbeans-modules-java-j2seproject-copylibstask.jar Must select some files in the IDE or set javac.includes Must select some files in the IDE or set javac.jsp.includes Must select a file in the IDE or set jsp.includes Browser not found, cannot launch the deployed application. Try to set the BROWSER environment variable. Launching ${browse.url} Must select one file in the IDE or set run.class Must select one file in the IDE or set run.class Must select one file in the IDE or set debug.class Must select one file in the IDE or set debug.class Must set fix.includes Must select some files in the IDE or set javac.includes Some tests failed; see details above. Must select some files in the IDE or set test.includes Some tests failed; see details above. Must select one file in the IDE or set test.class