Hi there, which JAR file contains this class? -> com.dawidweiss.carrot.util.tokenizer.languages.polish.Polish
see the warning below; thanks; 2006-09-16 19:43:55,864 WARN AllKnownLanguages - Could not instantiate language: com.dawidweiss.carrot.util.tokenizer.languages.polish.Polish java.lang.NoClassDefFoundError: com/dawidweiss/carrot/filter/stempelator/Stempelator at com.dawidweiss.carrot.util.tokenizer.languages.polish.Polish.createStemmerInstance(Polish.java:89) at com.dawidweiss.carrot.util.tokenizer.languages.LanguageBase.initialize(LanguageBase.java:132) at com.dawidweiss.carrot.util.tokenizer.languages.LanguageBase.<init>(LanguageBase.java:91) at com.dawidweiss.carrot.util.tokenizer.languages.StemmedLanguageBase.<init>(StemmedLanguageBase.java:39) at com.dawidweiss.carrot.util.tokenizer.languages.polish.Polish.<init>(Polish.java:59) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:274) at java.lang.Class.newInstance0(Class.java:308) at java.lang.Class.newInstance(Class.java:261) at com.dawidweiss.carrot.util.tokenizer.languages.AllKnownLanguages.<clinit>(AllKnownLanguages.java:70) at org.apache.nutch.clustering.carrot2.Clusterer$2.getInstance(Clusterer.java:129) at com.dawidweiss.carrot.core.local.LocalControllerBase$1.makeObject(LocalControllerBase.java:95) at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:771)