weblucene的部署问题

我按照weblucene中的build.txt文档部署，ant build成功，建立索引成功，然后java SearchRunner -i 索引目录 -f 域 -k 关键字 ,提示出错如下(相关的环境变量已设):
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.lucene.search
.Scorer.score(Lorg/apache/lucene/search/HitCollector;I)V
        at org.apache.lucene.search.IndexOrderSearcher.search(Unknown Source)
        at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:64)
        at org.apache.lucene.search.Hits.<init>(Hits.java:43)
        at org.apache.lucene.search.Searcher.search(Searcher.java:33)
        at org.apache.lucene.search.Searcher.search(Searcher.java:27)
        at SearchRunner.doSearch(Unknown Source)
        at SearchRunner.main(Unknown Source)望那位大哥赐教,谢谢了!