diff -uNr jabref-2.1-orig/build.xml jabref-2.1/build.xml
--- jabref-2.1-orig/build.xml	2006-08-28 12:02:36.000000000 +1000
+++ jabref-2.1/build.xml	2006-08-28 12:05:21.000000000 +1000
@@ -88,11 +88,6 @@
         <property name="library.directory" value="lib" />
 
 
-    <taskdef name="jarbundler"
-                  classpath="${library.directory}/jarbundler-1.4.jar"
-                  classname="com.loomcom.ant.tasks.jarbundler.JarBundler" />
-
-
         <!-- Build classpath -->
         <path id="classpath">
                 <pathelement path="${build.classes}" />
@@ -423,7 +418,10 @@
 
 
         <target name="osxjar">
-        <jarbundler dir="${build.lib}"
+		    <taskdef name="jarbundler"
+                  classpath="${library.directory}/jarbundler-1.4.jar"
+                  classname="com.loomcom.ant.tasks.jarbundler.JarBundler" />
+	        <jarbundler dir="${build.lib}"
                     name="JabRef"
                     mainclass="net.sf.jabref.JabRef"
                     jars="${build.lib}/${jabref.bin}.jar"