: The stack trace is attached. I also saw this warning in the logs not sure
>From your attachment... 853 SEVERE: org.apache.solr.common.SolrException: undefined field: score 854 at org.apache.solr.handler.component.TermVectorComponent.process(TermVectorComponent.java:142) 855 at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194) 856 at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129) 857 at org.apache.solr.core.SolrCore.execute(SolrCore.java:1357) ...this is one of the key pieces of info that was missing from your earlier email: that you are using the TermVectorComponent. It's likely that something changed in the TVC on 3x between the two versions you were using and thta change freaks out now on "*" or "score" in the fl. you still haven't given us an example of the full URLs you are using that trigger this error. (it's posisble there is something slightly off in your syntax - we don't know because you haven't shown us) All in: this sounds like a newly introduced bug in TVC, please post the details into a new Jira issue. as to the warning you asked about... : Feb 3, 2011 8:14:10 PM org.apache.solr.core.Config getLuceneVersion : WARNING: the luceneMatchVersion is not specified, defaulting to LUCENE_24 : emulation. You should at some point declare and reindex to at least 3.0, : because 2.4 emulation is deprecated and will be removed in 4.0. This parameter : will be mandatory in 4.0. if you look at the example configs on the 3x branch it should be explained. it's basically just a new "feature" that lets you specify which "quirks" of the underlying lucene code you want (so on upgrading you are in control of wether you eliminate old quirks or not) -Hoss
