I just downloaded the newest version of the Fop bin. When I try to run the 
examples using the runtests.bat I get :

C:\fop20\docs\examples>runtests
Fop Test
----------------
Starting Tests ...
Buildfile: build.xml

init:

creating new test pdf files:

BUILD FAILED

java.lang.NoClassDefFoundError: org/apache/tools/ant/BuildException
        at java.lang.Class.getMethods0(Native Method)
        at java.lang.Class.getMethods(Class.java:742)
        at org.apache.tools.ant.IntrospectionHelper.<init>
(IntrospectionHelper.java:115)
        at org.apache.tools.ant.IntrospectionHelper.getHelper
(IntrospectionHelper.java:208
)
        at org.apache.tools.ant.UnknownElement.handleChildren
(UnknownElement.java:139)
        at org.apache.tools.ant.UnknownElement.maybeConfigure
(UnknownElement.java:108)
        at org.apache.tools.ant.Target.execute(Target.java:152)
        at org.apache.tools.ant.Project.runTarget(Project.java:898)
        at org.apache.tools.ant.Project.executeTarget(Project.java:536)
        at org.apache.tools.ant.Project.executeTargets(Project.java:510)
        at org.apache.tools.ant.Main.runBuild(Main.java:421)
        at org.apache.tools.ant.Main.main(Main.java:149)

Total time: 0 seconds
org/apache/tools/ant/BuildException

I noticed that the ant.jar doesn't appear to be included in the latest release. 
I already had it installed and just copied the .jar to the lib directory where 
the .bat file was looking for it, but I still get the same error.

Any suggestions?

Bryan