how do I setup sablecc-anttask?

[Steve Kelem <s_kelem@pacbell.net>]

I have sableCC 2.18.1, and I'm trying to get the anttask to work.
I created sablecc-anttask.jar and moved it into $ANT_HOME/lib.

My build.xml file has the following:
  <target name="parser.sourcecode" depends="init"
   description="build parser sourcecode">
     <sablecc src="${pre.dir}" outputdirectory="${gensrc.dir}">
        <include name="idl-grammar.scc"/>
     </sablecc>
  </target>

I get the message:
parser.sourcecode:

BUILD FAILED
file:c:/home/kelem/src/java/acad/build.xml:139: Could not create task or 
type of type: sablecc.

I tried:
1. Renaming the Ant task "sablecc" to "sablecc-anttask" to match the 
name of the jar file.
2. Rename the jar file to sablecc.jar.
3. All permutations of (1) and (2).

What am I doing wrong?

Thanks for your help,
Steve Kelem