NetBeans 7.1.2にプロジェクトがあり、プロジェクトをビルドしようとすると次の問題が発生します
D:\netbeans_workspace\Servlets-DWR\nbproject\build-impl.xml:479: 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
BUILD FAILED (total time: 0 seconds)