An item with the same key has already been added. System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at Goottite.Search.MultiSearch.CorpusSearchMultiResult.BuildLineToColonsMap(GoottiteDocument doc, SentenceKeyColonMap sentenceKeyToColon) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\MultiSearch\CorpusSearchMultiResult.cs:line 492 at Goottite.Search.MultiSearch.CorpusSearchMultiResult.ExpandSentenceDictionaries(SentenceDictionarySet rawDicts, HashSet`1 candidateDocuments) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\MultiSearch\CorpusSearchMultiResult.cs:line 432 at Goottite.Search.MultiSearch.CorpusSearchMultiResult.CalculateMultiWordSearch(CorpusSearchResult[] subResults, Boolean isOrderedMultimatch, Int32 maxColonsPerDocument, Int32 maxDocuments) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\MultiSearch\CorpusSearchMultiResult.cs:line 172 at Goottite.Search.MultiSearch.CorpusSearchMultiResult..ctor(String originalQueryStr, CorpusSearchResult[] subResults, Boolean isOrderedMultimatch, Int32 tabletsPerPage, Int32 maxPages, Int32 maxColonsPerDocument) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\MultiSearch\CorpusSearchMultiResult.cs:line 74 at Goottite.Search.GoottiteSearchEngine.SearchMultiWord(String originalQueryStr, String[] subWords, Boolean isOrderedMultimatch, SearchFilter filter) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\GoottiteSearchEngine.cs:line 305 at Goottite.Search.GoottiteSearchEngine.SearchInternal(String queryStr) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\GoottiteSearchEngine.cs:line 190 at Goottite.Search.GoottiteSearchEngine.Search(String queryStr, Boolean allowCache) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\Goottite\Search\GoottiteSearchEngine.cs:line 360 at HC.SearchService.SearchPlugin.Search(String parametersStr) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\HC.SearchService\SearchPlugin.cs:line 107 at HC.SearchService.SearchPlugin.ProcessMessage(String topic, String parameters) in C:\Data\Source\Projekty.Danik\HittiteCorpus2\Goottite\HC.SearchService\SearchPlugin.cs:line 42