i get this error when indexing a collection of 120,000 small text documents.

java.lang.NullPointerException
	at org.apache.lucene.index.IndexWriter.close(Unknown Source)
 	at org.apache.lucene.demo.IndexFiles.main(IndexFiles.java:73) 

the index appears to be usable when i run queries on it. i have tried running the code in Borland JBuilder 9 in the debugger and i don't get anything useful from the exception. any suggestions? the 120,000 documents are all in one directory and i am running under Windows 2000 using the Sun 1.4.2 JVM.

Herb....

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