I got this same stacktrace twice. The context of both occurances was me typing a class that was not imported (of course), but once I pressed Ctrl+Enter, it gave me an "Internal Assertion" dialogbox, the stacktrace but the class was still not imported. Hitting Alt+Enter once more imported the class though.
Hope it helps.
regards,
Patrik Andersson
[19490656] ERROR - com.intellij.command.a.b -
[19490676] ERROR - com.intellij.command.a.b - IntelliJ IDEA (Ariadna) Build #607
[19490686] ERROR - com.intellij.command.a.b - JDK: 1.3.1_01
[19490686] ERROR - com.intellij.command.a.b - VM: Java HotSpot(TM) Client VM
[19490686] ERROR - com.intellij.command.a.b - Vendor: Sun Microsystems Inc.
[19490686] ERROR - com.intellij.command.a.b - OS: Windows 2000
[19490726] ERROR - com.intellij.command.a.b -
java.lang.NullPointerException
at com.intellij.psi.impl.source.a.h.a(h.java:95)
at com.intellij.psi.impl.source.a.a.a(a.java:266)
at com.intellij.psi.impl.source.cc.f(cc.java:8)
at com.intellij.codeInsight.daemon.impl.c.b(c.java:31)
at com.intellij.codeInsight.daemon.impl.c.b(c.java:22)
at com.intellij.codeInsight.daemon.impl.e.run(e.java:2)
at com.intellij.psi.impl.o.run(o.java:16)
at com.intellij.vfs.VirtualFileManager.b(VirtualFileManager.java:79)
at com.intellij.psi.impl.v.c(v.java:42)
at com.intellij.codeInsight.daemon.impl.f.run(f.java:2)
at com.intellij.command.a.b.a(b.java:8)
at com.intellij.codeInsight.daemon.impl.c.a(c.java:12)
at com.intellij.codeInsight.daemon.impl.c.a(c.java:61)
at com.intellij.codeInsight.daemon.impl.d.actionPerformed(d.java:2)
at com.intellij.ui.bu.a(bu.java:29)
at com.intellij.ui.bu.a(bu.java:7)
at com.intellij.ui.da.actionPerformed(da.java)
at javax.swing.JComponent$ActionStandin.actionPerformed(JComponent.java:2377)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1384)
at javax.swing.JComponent.processKeyBinding(JComponent.java:2078)
at javax.swing.JComponent.processKeyBindings(JComponent.java:2115)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2041)
at java.awt.Component.processEvent(Component.java:3553)
at java.awt.Container.processEvent(Container.java:1164)
at java.awt.Component.dispatchEventImpl(Component.java:2593)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.LightweightDispatcher.processKeyEvent(Container.java:2155)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2135)
at java.awt.Container.dispatchEventImpl(Container.java:1200)
at java.awt.Window.dispatchEventImpl(Window.java:926)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at com.intellij.ide.c.dispatchEvent(c.java:26)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
