My downloader is not starting and when i run the jdupdate i have this message

java.lang.NoClassDefFoundError: jd/gui/UserIO
at jd.utils.JDUtilities.getDatabaseConnector(JDUtilities.java:876)
at jd.config.SubConfiguration.<init>(SubConfiguration.java:77)
at jd.config.SubConfiguration.getConfig(SubConfiguration.java:106)
at jd.update.WebUpdater.getConfig(WebUpdater.java:74)
at jd.update.Main.main(Main.java:121)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
at com.install4j.runtime.launcher.WinLauncher.main(Unknown Source)
Caused by: java.lang.ClassNotFoundException: jd.gui.UserIO
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 12 more
Please do you know what is this? What i have to do?

[coalado]

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