Re: Auto-Weka: class not found

Perhaps this occurred because some of the files of the old version of the
Auto-WEKA package were not removed, and there is some interference. I would
try to uninstall and reinstall the package, perhaps making sure that after
uninstallation all of the Auto-WEKA files have indeed been removed from the
%HOMEPATH%\wekafiles\packages folder (assuming you have not changed your
WEKAHOME variable, this is where WEKA stores packages). Alternatively, try
removing the entire wekafiles folder (but this means you will have to
reinstall packages that you need).

I have just tried uninstalling and reinstalling the Auto-WEKA 2.6.3 package
and the package still works fine: the tab is still there. This was on
Windows 10 with WEKA 3.8.5, starting WEKA from the WIndows menu.

Cheers,
Eibe

On Sat, Jun 19, 2021 at 2:41 PM Potschadtke, Jens <
[email protected]> wrote:

> Hello,
>
>
>
> I have a problem with Weka 3.8.5 on Windows 10 in combination with
> Auto-Weka 2.6.3.
>
> I recently updated Auto-Weka with the package manager from 2.6.1 to 2.6.3
> and now it is no longer usable.
>
> Auto-Weka doesn’t show up as a tab inside the Explorer window and no
> longer shows up in the list of available classifiers; but it shows up as
> loaded in the Package Manager.
>
> The Weka log shows this:
>
>
>
> 3D [dev] 1.6.0-pre12-daily-experimental daily
>
>
>
> Checking for new packages...
>
> java.lang.ClassNotFoundException: weka.gui.explorer.AutoWEKAPanel
>
>
> java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
>
>
> java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown
> Source)
>
>                 java.base/java.lang.ClassLoader.loadClass(Unknown Source)
>
>                 java.base/java.lang.Class.forName0(Native Method)
>
>                 java.base/java.lang.Class.forName(Unknown Source)
>
>
> weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:198)
>
>
> weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:178)
>
>                 weka.gui.explorer.Explorer.<init>(Explorer.java:234)
>
>
> weka.gui.GUIChooserApp.showExplorer(GUIChooserApp.java:1351)
>
>
> weka.gui.GUIChooserApp$22.actionPerformed(GUIChooserApp.java:1167)
>
>
> java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
>
>
> java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown
> Source)
>
>
> java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
> Source)
>
>
> java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)
>
>
> java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
> Source)
>
>                 java.desktop/java.awt.Component.processMouseEvent(Unknown
> Source)
>
>
> java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
>
>                 java.desktop/java.awt.Component.processEvent(Unknown
> Source)
>
>                 java.desktop/java.awt.Container.processEvent(Unknown
> Source)
>
>                 java.desktop/java.awt.Component.dispatchEventImpl(Unknown
> Source)
>
>                 java.desktop/java.awt.Container.dispatchEventImpl(Unknown
> Source)
>
>                 java.desktop/java.awt.Component.dispatchEvent(Unknown
> Source)
>
>
> java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
> Source)
>
>
> java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown
> Source)
>
>
> java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
>
>                 java.desktop/java.awt.Container.dispatchEventImpl(Unknown
> Source)
>
>                 java.desktop/java.awt.Window.dispatchEventImpl(Unknown
> Source)
>
>                 java.desktop/java.awt.Component.dispatchEvent(Unknown
> Source)
>
>                 java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown
> Source)
>
>                 java.desktop/java.awt.EventQueue$4.run(Unknown Source)
>
>                 java.desktop/java.awt.EventQueue$4.run(Unknown Source)
>
>
> java.base/java.security.AccessController.doPrivileged(Native Method)
>
>
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>                 java.desktop/java.awt.EventQueue$5.run(Unknown Source)
>
>                 java.desktop/java.awt.EventQueue$5.run(Unknown Source)
>
>
> java.base/java.security.AccessController.doPrivileged(Native Method)
>
>
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>                 java.desktop/java.awt.EventQueue.dispatchEvent(Unknown
> Source)
>
>
> java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
> Source)
>
>
> java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown
> Source)
>
>
> java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
> Source)
>
>
> java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>
>
> java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>
>                 java.desktop/java.awt.EventDispatchThread.run(Unknown
> Source)
>
>
>
>                 at
> java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source)
>
>                 at
> java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown
> Source)
>
>                 at java.base/java.lang.ClassLoader.loadClass(Unknown
> Source)
>
>                 at java.base/java.lang.Class.forName0(Native Method)
>
>                 at java.base/java.lang.Class.forName(Unknown Source)
>
>                 at
> weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:198)
>
>                 at
> weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:178)
>
>                 at weka.gui.explorer.Explorer.<init>(Explorer.java:234)
>
>                 at
> weka.gui.GUIChooserApp.showExplorer(GUIChooserApp.java:1351)
>
>                 at
> weka.gui.GUIChooserApp$22.actionPerformed(GUIChooserApp.java:1167)
>
>                 at
> java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
>
>                 at
> java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown
> Source)
>
>                 at
> java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
> Source)
>
>                 at
> java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)
>
>                 at
> java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
>
>                 at
> java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
>
>                 at java.desktop/java.awt.Component.processEvent(Unknown
> Source)
>
>                 at java.desktop/java.awt.Container.processEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
>
>                 at
> java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
>
>                 at java.desktop/java.awt.Component.dispatchEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
>
>                 at
> java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
>
>                 at java.desktop/java.awt.Window.dispatchEventImpl(Unknown
> Source)
>
>                 at java.desktop/java.awt.Component.dispatchEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
>
>                 at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
>
>                 at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
>
>                 at
> java.base/java.security.AccessController.doPrivileged(Native Method)
>
>                 at
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>                 at
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>                 at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
>
>                 at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
>
>                 at
> java.base/java.security.AccessController.doPrivileged(Native Method)
>
>                 at
> java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown
> Source)
>
>                 at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
> Source)
>
>                 at
> java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>
>                 at
> java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
>
>                 at java.desktop/java.awt.EventDispatchThread.run(Unknown
> Source)
>
> Library "scipy" is not available
>
> Library "sklearn" is not available
>
> Library "matplotlib" is not available
>
> Library "numpy" is not available
>
> Library "pandas" is not available, minimum version = 0.7.0
>
>
>
>
>
> I reinstalled Weka 3.8.5 for Windows but with no improvement.
>
>
>
> It seems to not find a class of autoweka. So, either it looks in the wrong
> place (path problems or something similar) or the class doesn’t exist in
> the package.
>
>
>
>
>
> Thanks for any help.
>
> Jens
>
>
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