JBDS が起動しない

Issue

• JBDS をインストールしても起動しません。ログファイルにエラーメッセージが出力されます。

!ENTRY org.eclipse.core.contenttype 4 0 2016-02-02 16:01:58.980
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException:Unable to acquire the state change lock for the module: osgi.identity; osgi.identity="org.eclipse.core.contenttype"; type="osgi.bundle"; version:Version="3.4.200.v20140207-1251"; singleton:="true" [id=71] STARTED [STARTED]
    at org.eclipse.osgi.container.Module.lockStateChange(Module.java:329)
    at org.eclipse.osgi.container.Module.start(Module.java:389)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1582)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.incStartLevel(ModuleContainer.java:1561)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.doContainerStartLevel(ModuleContainer.java:1533)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1476)
    at org.eclipse.osgi.container.ModuleContainer$ContainerStartLevel.dispatchEvent(ModuleContainer.java:1)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)