http://ayende.comAyende @ RahienCopyright (C) Ayende Rahien 2004 - 2021 (c) 202660 Most likely your hibernate.cfg.xml reference the assembly as well, so it is included twice. http://ayende.com/2716/nhibernate-query-analyzer-and-duplicatemappingexception#comment2http://ayende.com/2716/nhibernate-query-analyzer-and-duplicatemappingexception#comment2Tue, 18 Sep 2007 18:30:22 GMTHmm, I do get the DuplicateMapping Exception but I only add the assembly containing the mapping resources and hibernate.cfg.xml to the Project. When I try to start the repository checkout it doesn't recognize the app.config and complains about the not set Dialect. I really would like to try the NQA could you please help me? Thank you very much. Kindest regards Ludwig http://ayende.com/2716/nhibernate-query-analyzer-and-duplicatemappingexception#comment1http://ayende.com/2716/nhibernate-query-analyzer-and-duplicatemappingexception#comment1Tue, 18 Sep 2007 16:22:42 GMT