Lite installer crashes on Linux

[Nevon]

Describe the bug
Running the Lite setup jar using openjdk 24.0.1 on Arch Linux fails with a nullpointer exception.

Exception in thread "main" java.lang.ExceptionInInitializerError
        at installer.tree.JarEntryNode.getRenderer(JarEntryNode.java:294)
        at installer.tree.JarFileTreeRenderer.getTreeCellRendererComponent(JarFileTreeRenderer.java:22)
        at java.desktop/javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(Unknown Source)
        at java.desktop/javax.swing.tree.AbstractLayoutCache.getNodeDimensions(Unknown Source)
        at java.desktop/javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(Unknown Source)
        at java.desktop/javax.swing.tree.VariableHeightLayoutCache.updateNodeSizes(Unknown Source)
        at java.desktop/javax.swing.tree.VariableHeightLayoutCache.invalidateSizes(Unknown Source)
        at java.desktop/javax.swing.plaf.basic.BasicTreeUI.setCellRenderer(Unknown Source)
        at java.desktop/javax.swing.plaf.basic.BasicTreeUI$Handler.propertyChange(Unknown Source)
        at java.desktop/java.beans.PropertyChangeSupport.fire(Unknown Source)
        at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
        at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
        at java.desktop/java.awt.Component.firePropertyChange(Unknown Source)
        at java.desktop/javax.swing.JTree.setCellRenderer(Unknown Source)
        at installer.screens.BrowseFilesPanel.<init>(BrowseFilesPanel.java:68)
        at installer.mainframe.InstallerTabs.<init>(InstallerTabs.java:48)
        at installer.mainframe.InstallerTabs.main(InstallerTabs.java:192)
Caused by: java.lang.NullPointerException: Cannot invoke "javax.swing.Icon.getIconHeight()" because the return value of "javax.swing.UIManager.getIcon(Object)" is null
        at installer.tree.JarEntryRenderer.<clinit>(JarEntryRenderer.java:38)
        ... 17 more

To Reproduce
Download the latest Lite release from the Releases page and run it in Arch Linux using java -jar <jar> .

Expected behavior
The installer should run without crashing.

Desktop (please delete as appropriate):

• Linux

Additional context
I looked into the installer code where it was crashing, and noticed that 2 years ago there was a fix for this nullpointer exception, so perhaps the releases were built using an older version of the installer. It doesn't seem like the releases are built through CI, and I'm not familiar enough with these built tools to easily figure out how they are built.

[Nevon]

I can confirm that the installer version is wrong. I was able to work around the issue by:

1. Downloading the latest release of the installer (not nam itself, just the installer)
2. Downloading the latest release of nam lite
3. Extracting the contents of both the installer and nam lite into separate directories
4. Creating a new jar containing the contents of the installer plus the installation directory from nam lite, along with splash.jpg and sidebar-lite.png.

The result is a nam-lite installer that can be run successfully.

[memo33]

I can confirm that Lite is still using the old installer that had the bug. Though, for some reason, I currently cannot replicate the bug anymore, myself.

The following workaround (from here) may work as well:

JDK_JAVA_OPTIONS='-Dswing.crossplatformlaf=javax.swing.plaf.metal.MetalLookAndFeel' java -jar NetworkAddonMod_Lite_Setup_Version4_rev1.jar

[Nevon]

I tried that workaround, and it did not work for me.

[memo33]

Another alternative for now is to install NAM Lite with sc4pac instead: nam:network-addon-mod-lite