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Thread: Package Installation Error

  1. #1

    Default Package Installation Error

    Hi Mark,

    I am attempting to add packages on Weka-3-9. Some of the packages install with no error, but the ones that don't all have some "zip" error thwarting installation.
    Do you an idea to get around this error? error in opening zip file
    at Method)
    at<init>(Unknown Source)
    at<init>(Unknown Source)
    at<init>(Unknown Source)
    at weka.core.packageManagement.DefaultPackageManager.getPackageArchiveInfo(
    at weka.core.packageManagement.DefaultPackageManager.installPackageFromArchive(
    at weka.core.packageManagement.DefaultPackageManager.installPackageFromURL(
    at weka.core.packageManagement.DefaultPackageManager.installPackageFromRepository(
    at weka.core.WekaPackageManager.installPackageFromRepository(
    at weka.gui.PackageManager$InstallTask.doInBackground(
    at weka.gui.PackageManager$InstallTask.doInBackground(
    at javax.swing.SwingWorker$ Source)
    at Source)
    at Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$ Source)
    at Source)

  2. #2
    Join Date
    Aug 2006


    I'm afraid you'll need to upgrade to 3.9.1. Unfortunately, SourceForge changed how they serve up direct download links - sometimes they generate a redirect, and the package manager can't handle this. The issue is fixed in 3.8.1 and 3.9.1. If you upgrade, you may need to remove and re-install a number of packages. 3.8.1/3.9.1 introduce a new class loading mechanism for packages that attempts to avoid third-party library clashes between packages. This necessitated some changes to code in core and in certain packages.


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