Index: src/main/java/org/codehaus/mojo/javascript/WarPackageMojo.java
===================================================================
--- src/main/java/org/codehaus/mojo/javascript/WarPackageMojo.java	(revision 8651)
+++ src/main/java/org/codehaus/mojo/javascript/WarPackageMojo.java	(working copy)
@@ -21,6 +21,7 @@
 import org.apache.maven.artifact.DefaultArtifact;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
+import org.codehaus.plexus.util.FileUtils;
 import org.codehaus.mojo.javascript.archive.JavascriptArtifactManager;
 import org.codehaus.plexus.archiver.ArchiverException;
 
@@ -54,14 +55,15 @@
     /**
      * The folder for javascripts dependencies
      * 
-     * @parameter expression="${scripts}" default-value="lib"
+     * @parameter expression="${lib}" default-value="lib"
      */
     private String libsDirectory;
 
     /**
      * Use the artifactId as folder
      * 
-     * @parameter
+     * @parameter expression="${useArtifactId}" default-value="true"
+     * 
      */
     private boolean useArtifactId;
 
@@ -79,7 +81,10 @@
         throws MojoExecutionException, MojoFailureException
     {
         super.outputDirectory = new File( webappDirectory, scriptsDirectory );
-        super.execute();
+        if(FileUtils.fileExists(super.sourceDirectory.getAbsolutePath())) 
+        {
+            super.execute();
+        }
 
         try
         {