If you have previously installed your workflow Feature, but you have changed your workflow's Feature manifest.xml files, uninstall and reinstall the Feature using stsadm.
如果已经安装了工作流，后来又修改了工作流的manifest .xml文件，请使用stsadm卸载并重新安装工作流。
If you have previously installed your workflow Feature, but you have changed your workflow's Feature manifest.xml files, uninstall and reinstall the Feature using stsadm.
如果已经安装了工作流，后来又修改了工作流的manifest .xml文件，请使用stsadm卸载并重新安装工作流。
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