Stack trace for the case when debugger fails to start after a "crippled" session is terminated, from the main (project) window.

[shamefulCake1]

Cannot invoke "ghidra.app.util.viewer.listingpanel.VerticalPixelAddressMap.getNumLayouts()" because "this.layoutToPixel" is null
java.lang.NullPointerException: Cannot invoke "ghidra.app.util.viewer.listingpanel.VerticalPixelAddressMap.getNumLayouts()" because "this.layoutToPixel" is null
	at ghidra.app.plugin.core.flowarrow.FlowArrowMarginProvider.update(FlowArrowMarginProvider.java:502)
	at ghidra.app.plugin.core.flowarrow.FlowArrowMarginProvider.updateAndRepaint(FlowArrowMarginProvider.java:493)
	at ghidra.app.plugin.core.flowarrow.FlowArrowPanel.setBounds(FlowArrowPanel.java:180)
	at ghidra.app.util.viewer.util.ScrollpanelResizeablePanelLayout.layoutContainer(ScrollpanelResizeablePanelLayout.java:58)
	at java.desktop/java.awt.Container.layout(Container.java:1541)
	at java.desktop/java.awt.Container.doLayout(Container.java:1530)
	at java.desktop/java.awt.Container.validateTree(Container.java:1725)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validateTree(Container.java:1734)
	at java.desktop/java.awt.Container.validate(Container.java:1660)
	at java.desktop/javax.swing.SwingUtilities.updateComponentTreeUI(SwingUtilities.java:1356)
	at generic.theme.laf.LookAndFeelManager.updateComponentUis(LookAndFeelManager.java:191)
	at generic.theme.laf.LookAndFeelManager.resetAll(LookAndFeelManager.java:90)
	at generic.theme.ApplicationThemeManager.lambda$restoreThemeValues$0(ApplicationThemeManager.java:80)
	at generic.theme.ThemeManager.update(ThemeManager.java:656)
	at generic.theme.ApplicationThemeManager.restoreThemeValues(ApplicationThemeManager.java:77)
	at docking.theme.gui.ThemeUtils.askToSaveThemeChanges(ThemeUtils.java:59)
	at ghidra.app.plugin.gui.ThemeManagerPlugin.canClose(ThemeManagerPlugin.java:124)
	at ghidra.framework.plugintool.PluginManager.canClose(PluginManager.java:668)
	at ghidra.framework.plugintool.PluginTool.canClosePlugins(PluginTool.java:1245)
	at ghidra.framework.plugintool.PluginTool.canClose(PluginTool.java:1220)
	at ghidra.framework.main.FrontEndTool.canClose(FrontEndTool.java:415)
	at ghidra.framework.plugintool.PluginTool.close(PluginTool.java:1211)
	at ghidra.framework.main.AppInfo.exitGhidra(AppInfo.java:49)
	at ghidra.framework.plugintool.PluginTool$1.actionPerformed(PluginTool.java:1010)
	at docking.DockingActionProxy.actionPerformed(DockingActionProxy.java:47)
	at docking.DockingActionPerformer.lambda$perform$0(DockingActionPerformer.java:73)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

---------------------------------------------------
Build Date: 2025-Nov-28
Ghidra Version: 12.1
Java Home: /usr/lib64/zulu-openjdk21
JVM Version: Azul Systems, Inc. 21.0.4
OS: Linux 6.12.16 amd64
Workstation: laptop.redacted.net

[ryanmkurtz]

Converted to issue.