I fixed an issue that showed up on the Gear Changer tab. It was an NPE that showed up while repainting - i.e., in the Swing Thread - which did not result in a DEBUG log. Instead, there was a stack trace printed to my terminal window.As for the Gear Changer problems - those weren't present in earlier builds (like r15509), where the issue for me was mainly in the Active Effects tab of Daily Deeds window, so there might be separate places to look at.
C:\Users\...\Programs\kolmafia>"C:\Program Files (x86)\Java\jre1.8.0_31\bin\java.exe" -jar C:\Users\...\Programs\kolmafia\KoLmafia-15517.jar
KoLmafia v16.8 r15517
Released on February 11, 2014
Currently Running on Windows 7
Local Directory is C:\Users\...\Programs\kolmafia
Using Java 1.8.0_31
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at net.sourceforge.kolmafia.Modifiers.getModifiers(Modifiers.java:1814)
at net.sourceforge.kolmafia.swingui.GearChangeFrame.showModifiers(GearChangeFrame.java:252)
at net.sourceforge.kolmafia.swingui.widget.ListCellRendererFactory$DefaultRenderer.getListCellRendererComponent(ListCellRendererFactory.java:104)
at javax.swing.plaf.basic.BasicListUI.paintCell(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.paintImpl(Unknown Source)
at javax.swing.plaf.basic.BasicListUI.paint(Unknown Source)
at javax.swing.plaf.ComponentUI.update(Unknown Source)
at javax.swing.JComponent.paintComponent(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager$4.run(Unknown Source)
at javax.swing.RepaintManager$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.access$1300(Unknown Source)
at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)