diff -up antlr-maven-plugin/pom.xml.BAD antlr-maven-plugin/pom.xml
--- antlr-maven-plugin/pom.xml.BAD	2011-03-07 13:18:45.219217017 -0500
+++ antlr-maven-plugin/pom.xml	2011-03-07 13:18:57.498217062 -0500
@@ -132,7 +132,7 @@
         </executions>
         <configuration>
           <version>1.0.0</version>
-          <model>src/main/mdo/antlrOptions.mdo</model>
+          <models><model>src/main/mdo/antlrOptions.mdo</model></models>
         </configuration>
       </plugin>
     </plugins>