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activiti diagram editor can not work

Question asked by yhxjldx on Mar 14, 2012
Latest reply on Mar 14, 2012 by yhxjldx
I have installed Activiti BPMN 2.0 designer by eclipes hellp->install new software. but activiti diagram editor can not work.
XML info :
<?xml version="1.0" encoding="UTF-8"?>
<definitions id="definitions"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
targetNamespace="http://www.activiti.org/bpmn2.0">
<process id="helloWorld">
<startEvent id="start" />
<sequenceFlow id="flow1" sourceRef="start" targetRef="script" />
<scriptTask id="script" name="HelloWorld" scriptFormat="groovy">
<script>System.out.println("Hello world")</script>
</scriptTask>
<sequenceFlow id="flow2" sourceRef="script" targetRef="theEnd" />
<endEvent id="theEnd" />
</process>
</definitions>
some error info like this:
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: org.eclipse.emf.ecore.xmi.PackageNotFoundException: Package with uri 'http://www.omg.org/spec/BPMN/20100524/MODEL' not found. (platform:/resource/testActivitinew/src/main/resources/diagrams/NewFile.xml, 4, 51)

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