RTF indexing problem

Document opens fine. Only one version in the attchments dir so I know I was opening the correct one.
None of its text is indexed.

2005-01-20 15:54:11,423 ERROR [search.lucene.mapping.AttachmentLuceneDocumentFactory] Error extracting text from attachment: WSAD 5.0 setup.rtf
java.io.IOException: Invalid header signature; read 7015536635646467195, expected -2226271756974174256
at org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java:125)
at org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:120)
at org.textmining.text.extraction.WordExtractor.extractText(WordExtractor.java:48)
at bucket.search.lucene.mapping.AttachmentLuceneDocumentFactory.getAttachmentStringContent(AttachmentLuceneDocumentFactory.java:107)
at bucket.search.lucene.mapping.AttachmentLuceneDocumentFactory.createDocument(AttachmentLuceneDocumentFactory.java:56)
at com.atlassian.confluence.search.lucene.ConfluenceAttachmentLuceneDocumentFactory.createDocument(ConfluenceAttachmentLuceneDocumentFactory.java:14)
at bucket.search.lucene.LuceneIndexer.getDocument(LuceneIndexer.java:156)
at bucket.search.lucene.LuceneIndexer.indexAll(LuceneIndexer.java:94)
at com.atlassian.confluence.search.lucene.ConfluenceIndexer.indexAll(ConfluenceIndexer.java:47)
at bucket.search.lucene.AbstractBatchIndexer.indexEntities(AbstractBatchIndexer.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.springframework.aop.framework.AopProxyUtils.invokeJoinpointUsingReflection(AopProxyUtils.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:116)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:56)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:138)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:152)
at $Proxy22.indexEntities(Unknown Source)
at com.atlassian.confluence.search.IndexingTask.run(IndexingTask.java:24)
at java.lang.Thread.run(Thread.java:534)