Eclipse(およびコンソール)でAndroid SDK Managerを起動しようとすると、この例外が発生します
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] Exception in thread "main" java.lang.NoClassDefFoundError: com/android/archquery/Main
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] Caused by: java.lang.ClassNotFoundException: com.android.archquery.Main
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.security.AccessController.doPrivileged(Native Method)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] Exception in thread "main" java.lang.NoClassDefFoundError: com/android/archquery/Main
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] Caused by: java.lang.ClassNotFoundException: com.android.archquery.Main
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.security.AccessController.doPrivileged(Native Method)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
[2013-01-19 22:43:47 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] Exception in thread "Thread-1" java.lang.NoClassDefFoundError: com/android/sdkmanager/Main
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] Caused by: java.lang.ClassNotFoundException: com.android.sdkmanager.Main
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at java.security.AccessController.doPrivileged(Native Method)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
[2013-01-19 22:43:48 - SDK Manager] [SDK Manager] at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
原因はわかりませんが、Eclipseとadtプラグインを再インストールし、新しいバージョンのSDKをダウンロードしても問題は解決しませんでした。何か案は?