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我正在使用 Eclipse Oxygen.2 Release (4.7.2)。当我尝试安装 JBPM 时，我得到“
无法完成安装，因为找不到一个或多个必需的项目。正在安装的软件：JBoss jBPM Core Developer Resources 7.5 .0.Final (org.jbpm.eclipse.feature.source.feature.group 7.5.0.Final) 缺少要求：JBoss jBPM Core 7.5.0.Final (org.jbpm.eclipse.feature.feature.group 7.5.0 .Final) 需要 'org.eclipse.core.runtime 0.0.0' 但找不到无法满足依赖关系：来自：JBoss jBPM Core Developer Resources 7.5.0.Final (org.jbpm.eclipse.feature.source.feature .group 7.5.0.Final) 到：org.jbpm.eclipse.feature.feature.group [7.5.0.Final] 安装停止

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并尝试安装 JBPM 和 BPMN2.0 建模器，当我尝试安装 http://download.eclipse.org/bpmn2-modeler/updates/oxygen/1.4.x/我得到

Cannot complete the install because one or more required items could not be found.
  Software being installed: BPMN2 Modeler - jBPM Runtime Extension Feature 1.4.2.Final-v20171109-1930-B1 (org.eclipse.bpmn2.modeler.runtime.jboss.feature.group 1.4.2.Final-v20171109-1930-B1)
  Missing requirement: org.eclipse.bpmn2.modeler.core 1.3.3.Final-v20170221-1647-B60 requires 'bundle org.eclipse.emf.transaction 0.0.0' but it could not be found
  Missing requirement: BPMN2 Modeler Core 1.4.2.Final-v20171109-1930-B1 (org.eclipse.bpmn2.modeler.core 1.4.2.Final-v20171109-1930-B1) requires 'bundle org.eclipse.emf.transaction 0.0.0' but it could not be found
  Cannot satisfy dependency:
    From: BPMN2 Modeler - jBPM Runtime Extension Feature 1.4.2.Final-v20171109-1930-B1 (org.eclipse.bpmn2.modeler.runtime.jboss.feature.group 1.4.2.Final-v20171109-1930-B1)
    To: org.eclipse.bpmn2.modeler.core 0.0.0

我尝试了不同的版本，还尝试从市场安装插件，还尝试手动安装 jar，但没有运气。我的大学使用相同版本的 eclipse 可以毫无问题地安装插件。欢迎提出建议，谢谢。

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