Hello all, I´m working with drools 5.1M flow and when I run the flow, before the start, I get this message: (null: 42, 168): cvc-complex-type.3.2.2: Attribute 'implementation' is not allowed to appear in element 'businessRuleTask'. Then the flow executes until rule task node and finally it exits, without errors, but without finishing the flow too. The line referred in bpmn file is: <businessRuleTask id="_14" name="Propose Classifier" g:x="48" g:y="493" g:width="126" g:height="48" g:ruleFlowGroup="Propose Classifiers" implementation="Other"/> Could you help me with this? Thank you in advance, Kevin. -- Vicomtech Kevin Alonso González Investigador / Researcher Televisión Digital y Servicios Multimedia / Digital TV & Multimedia Services kalonso(a)vicomtech.org Mikeletegi Pasealekua, 57 - Parque Tecnológico 20009 Donostia - San Sebastián - Spain Tel: +[34] 943 30 92 30 Fax: +[34] 943 30 93 93 www.vicomtech.org