eclipse起動エラーの対処法

以下のようなエラーが出た場合、clean起動すると解決するかも？ (自分は解決した)

!SESSION 2013-09-01 01:55:17.098 -----------------------------------------------
eclipse.buildId=M20130204-1200
java.version=1.7.0_25
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=ja_JP
Framework arguments:  -product org.eclipse.epp.package.jee.product -keyring /Users/[ユーザ名]/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.jee.product -keyring /Users/[ユーザ名]/.eclipse_keyring -showlocation

!ENTRY org.eclipse.osgi 4 0 2013-09-01 01:55:18.167
!MESSAGE 始動エラー
!STACK 1
java.lang.RuntimeException: バンドル org.eclipse.osgi の org.eclipse.osgi.framework.internal.core.SystemBundleActivator.start() での例外。
    at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.resume(InternalSystemBundle.java:233)
    at org.eclipse.osgi.framework.internal.core.Framework.launch(Framework.java:657)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:274)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: org.osgi.framework.BundleException: バンドル org.eclipse.osgi の org.eclipse.osgi.framework.internal.core.SystemBundleActivator.start() での例外。
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
    at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.resume(InternalSystemBundle.java:225)
    ... 10 more
Caused by: java.lang.NoSuchMethodError: org.eclipse.osgi.internal.baseadaptor.BaseStorage$StateSaver.<init>(Lorg/eclipse/osgi/internal/baseadaptor/BaseStorage;)V
    at org.eclipse.osgi.internal.baseadaptor.BaseStorage.frameworkStart(BaseStorage.java:915)
    at org.eclipse.osgi.baseadaptor.BaseAdaptor.frameworkStart(BaseAdaptor.java:250)
    at org.eclipse.osgi.framework.internal.core.SystemBundleActivator.start(SystemBundleActivator.java:60)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
    ... 12 more

clean起動

/Applications/eclipse/Eclipse.app/Contents/MacOS/eclipse -clean