commons-cli.jar is causing BuildLauncher to fail on first run

Had to comment out the unjar to get it to work on a new build.

   target(dojar:"create server jar with embedded war") {
    depends(classpath,doCompile)
    def fileName = grailsAppName
    def version = metadata.getApplicationVersion()

   //    ant.unjar(src:"target/launcher-contents/pkgs/webapp/WEB-INF/lib/commons-cli-1.0.jar",     dest:"target/server-classes")
    
    ant.mkdir(dir:"target/server-classes/pkgs")
        ant.jar(basedir:"target/server-classes", destfile:"target/${fileName}-server-${version}.jar"){
        manifest{
            attribute(name:"Rundeck-Version",value:"${version}")
        }
    }
    ant.delete(dir:"target/server-classes")
   }