setFilter exception

exception on client

org.elasticsearch.transport.RemoteTransportException: [Fer-de-Lance][inet[/127.0.0.1:9300]][indices/search]
Caused by: org.elasticsearch.action.search.SearchPhaseExecutionException: Failed to execute phase [query], total failure; shardFailures {[VHXZa25OQGCtSDa9zdUyFQ][twindex][0]: QueryPhaseExecutionException[[twindex][0]: query[ConstantScore(org.elasticsearch.common.lucene.search.AndFilter@7ed467ba)],from[0],size[15],sort[<custom:"relevance": org.elasticsearch.index.field.data.doubles.DoubleFieldDataType$1@1afc83a>!]: Query Failed [Failed to execute main query]]; nested: }{[VHXZa25OQGCtSDa9zdUyFQ][twindex][3]: QueryPhaseExecutionException[[twindex][3]: query[ConstantScore(org.elasticsearch.common.lucene.search.AndFilter@7ed467ba)],from[0],size[15],sort[<custom:"relevance": org.elasticsearch.index.field.data.doubles.DoubleFieldDataType$1@1afc83a>!]: Query Failed [Failed to execute main query]]; nested: }
...
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.onFirstPhaseResult(TransportSearchTypeAction.java:250)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.access$200(TransportSearchTypeAction.java:78)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction$3.onFailure(TransportSearchTypeAction.java:200)
        at org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:134)
        at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:76)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:194)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.access$000(TransportSearchTypeAction.java:78)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction$2.run(TransportSearchTypeAction.java:171)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

exception on server

2011-02-10 23:27:36,587 [elasticsearch[Amahl Farouk][tp]-pool-1-thread-2] DEBUG org.elasticsearch.action.search.type - [Amahl Farouk] [twindex][1], node[I4DiNO3oStSDwz8VTeb9Ng], [P], s[STARTED]: Failed to execute [org.elasticsearch.action.search.SearchRequest@1ba3afe]
org.elasticsearch.search.query.QueryPhaseExecutionException: [twindex][1]: query[ConstantScore(org.elasticsearch.common.lucene.search.AndFilter@78c695be)],from[0],size[15],sort[<custom:"relevance": org.elasticsearch.index.field.data.doubles.DoubleFieldDataType$1@380c76>!]: Query Failed [Failed to execute main query]
        at org.elasticsearch.search.query.QueryPhase.execute(QueryPhase.java:194)
        at org.elasticsearch.search.SearchService.executeQueryPhase(SearchService.java:173)
        at org.elasticsearch.search.action.SearchServiceTransportAction.sendExecuteQuery(SearchServiceTransportAction.java:131)
        at org.elasticsearch.action.search.type.TransportSearchQueryThenFetchAction$AsyncAction.sendExecuteFirstPhase(TransportSearchQueryThenFetchAction.java:76)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.performFirstPhase(TransportSearchTypeAction.java:194)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction.access$000(TransportSearchTypeAction.java:78)
        at org.elasticsearch.action.search.type.TransportSearchTypeAction$BaseAsyncAction$2.run(TransportSearchTypeAction.java:171)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
        at org.elasticsearch.index.field.data.doubles.DoubleFieldDataComparator.copy(DoubleFieldDataComparator.java:68)
        at org.apache.lucene.search.TopFieldCollector$OneComparatorNonScoringCollector.collect(TopFieldCollector.java:85)
        at org.elasticsearch.common.lucene.search.FilteredCollector.collect(FilteredCollector.java:53)
        at org.elasticsearch.common.lucene.MultiCollector.collect(MultiCollector.java:54)
        at org.apache.lucene.search.Scorer.score(Scorer.java:62)
        at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:212)
        at org.elasticsearch.search.internal.ContextIndexSearcher.search(ContextIndexSearcher.java:159)
        at org.elasticsearch.search.internal.ContextIndexSearcher.search(ContextIndexSearcher.java:131)
        at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:177)
        at org.apache.lucene.search.Searcher.search(Searcher.java:49)
        at org.elasticsearch.search.query.QueryPhase.execute(QueryPhase.java:188)
        ... 9 more

gistfile2.java

SearchRequestBuilder srb ...// set query via QueryBuilders.queryString, set facets, sorts, filters, ...
key ="dt";

// I'm doing a filter over date ('dt') ... but I'm also doing a facet over dt ...

RangeFilterBuilder rfb = FilterBuilders.rangeFilter(key);
from = Helper.toDate(val);
rfb.from(from).includeLower(true);
srb.setFilter(rfb);