那位仁兄看看这段错误代码的涵义？

兄弟对java不熟，请那位大侠帮忙看看。这是在windows 环境中安装 BES VisiBroker Edition 6.5 后，打开控制台时报的错误。
 
Error type: java.lang.NoClassDefFoundError
Thread: Thread[Tree Populate Thread,6,main]
Stack trace:
java.lang.NoClassDefFoundError: com/borland/enterprise/management/api/IManagedObject
at com.borland.management.visibroker.discovery.VisiDiscovery.findOsAgentPorts(VisiDiscovery.java:69)
at com.borland.management.visibroker.nodes.SmartAgentFolderNode$ChildFactory.getChildren(SmartAgentFolderNode.java:60)
at com.borland.jafa.ui.explorer.AbstractExplorerNode.getChildren(AbstractExplorerNode.java:283)
at com.borland.jafa.ui.explorer.AbstractExplorerNode.loadChildren(AbstractExplorerNode.java:312)
at com.borland.jafa.ui.explorer.ExplorerTreeNode.populateImpl(Explorer.java:1531)
at com.borland.jafa.ui.tree.FwTreeNode.asyncPopulate(FwTreeNode.java:97)
at com.borland.jafa.ui.tree.FwTreeNode$1.run(FwTreeNode.java:74)
at java.lang.Thread.run(Thread.java:534)