NullPointerException in Background editor

[irock]

I created a new background resource, imported an image for it, opened an existing background resource to reference it, changed the "repeat background" property in the new background, and was switching to the reference background when this error happened over and over again.

Full logs attached.

Code: [Select]

java.lang.NullPointerException
at stencyl.sw.util.gfx.ImageUtil.downsize(ImageUtil.java:319)
at stencyl.sw.editors.animation.AnimationEditor$CustomRenderer.getListCellRendererComponent(AnimationEditor.java:608)
at java.desktop/javax.swing.plaf.basic.BasicListUI.paintCell(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicListUI.paintImpl(Unknown Source)
at java.desktop/javax.swing.plaf.basic.BasicListUI.paint(Unknown Source)
at java.desktop/javax.swing.plaf.ComponentUI.update(Unknown Source)
at java.desktop/javax.swing.JComponent.paintComponent(Unknown Source)
at stencyl.sw.editors.animation.AnimationEditor.paintComponent(AnimationEditor.java:261)
at java.desktop/javax.swing.JComponent.paint(Unknown Source)
at java.desktop/javax.swing.JComponent.paintToOffscreen(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBufferedImpl(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
at java.desktop/javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paint(Unknown Source)
at java.desktop/javax.swing.JComponent._paintImmediately(Unknown Source)
at java.desktop/javax.swing.JComponent.paintImmediately(Unknown Source)
at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
at java.desktop/javax.swing.RepaintManager$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
at java.desktop/javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
at java.desktop/java.awt.event.InvocationEvent.dispatch(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.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.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$2.run(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$4.run(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/java.awt.WaitDispatchSupport.enter(Unknown Source)
at java.desktop/java.awt.Dialog.show(Unknown Source)
at java.desktop/java.awt.Component.show(Unknown Source)
at java.desktop/java.awt.Component.setVisible(Unknown Source)
at java.desktop/java.awt.Window.setVisible(Unknown Source)
at java.desktop/java.awt.Dialog.setVisible(Unknown Source)
at stencyl.sw.util.dg.ExceptionDialog.<init>(ExceptionDialog.java:121)
at stencyl.sw.util.dg.ExceptionDialog.showExceptionDialog(ExceptionDialog.java:59)
at stencyl.sw.util.dg.ExceptionDialog.showUncaughtExceptionDialog(ExceptionDialog.java:65)
at stencyl.sw.UncaughtExceptionHandler.showErrorMessage(UncaughtExceptionHandler.java:126)
at stencyl.sw.UncaughtExceptionHandler.uncaughtException(UncaughtExceptionHandler.java:47)
at java.base/java.lang.ThreadGroup.uncaughtException(Unknown Source)
at java.base/java.lang.ThreadGroup.uncaughtException(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.processException(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.pumpEventsForFilter(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$2.run(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$4.run(Unknown Source)
at java.desktop/java.awt.WaitDispatchSupport$4.run(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/java.awt.WaitDispatchSupport.enter(Unknown Source)
at java.desktop/java.awt.Dialog.show(Unknown Source)
at java.desktop/java.awt.Component.show(Unknown Source)
at java.desktop/java.awt.Component.setVisible(Unknown Source)
at java.desktop/java.awt.Window.setVisible(Unknown Source)
at java.desktop/java.awt.Dialog.setVisible(Unknown Source)
at stencyl.sw.util.dg.ExceptionDialog.<init>(ExceptionDialog.java:121)
at stencyl.sw.util.dg.ExceptionDialog.showExceptionDialog(ExceptionDialog.java:59)
at stencyl.sw.util.dg.ExceptionDialog.showUncaughtExceptionDialog(ExceptionDialog.java:65)
at stencyl.sw.UncaughtExceptionHandler.showErrorMessage(UncaughtExceptionHandler.java:126)
at stencyl.sw.UncaughtExceptionHandler.uncaughtException(UncaughtExceptionHandler.java:47)
at java.base/java.lang.ThreadGroup.uncaughtException(Unknown Source)
at java.base/java.lang.ThreadGroup.uncaughtException(Unknown Source)
at java.desktop/java.awt.EventDispatchThread.processException(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)


[irock]

I reproduced it on video:

https://www.youtube.com/watch?v=tLvBeuxSUrA

The error occurred after middle-click closing the resource's tab.

 2020-12-17_10-48-49.log (414.11 kB - downloaded 959 times.)