Est-ce que le site garde pas un pointeur sur le fichier même après une recherche ?

INFO (2009-02-17) 09:36.33:939 [org.amet] (/cms/default/fr/_contributor/generation/generation.html) http-8080-Processor25/GenerationEngine: Generation process started
ERROR (2009-02-17) 09:36.34:220 [org.amet] (Unknown-URI) Unknown-Thread/GenerationEngine: An error occured durring Generation process
java.io.IOException: Cannot delete C:\icam\ametys\site\web\WEB-INF\repository\root\default\index\fr_5.cfs
at org.apache.lucene.store.FSDirectory.create(FSDirectory.java:198)
at org.apache.lucene.store.FSDirectory.init(FSDirectory.java:177)
at org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java:141)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:224)
at org.ametys.anycontent.plugins.generation.action.GenerationEngine._index(GenerationEngine.java:1480)
at org.ametys.anycontent.plugins.generation.action.GenerationEngine._processSite(GenerationEngine.java:417)
at org.ametys.anycontent.plugins.generation.action.GenerationEngine._generate(GenerationEngine.java:370)
at org.ametys.anycontent.plugins.generation.action.GenerationEngine.run(GenerationEngine.java:246)
at java.lang.Thread.run(Thread.java:595)
INFO (2009-02-17) 09:36.34:220 [org.amet] (Unknown-URI) Unknown-Thread/GenerationEngine: Generation process ended