When attempting to rename an abstract method in an abstract superclass, I get the following message:

Module Java Refactoring threw java.lang.NullPointerException.  Please
report a bug against Java Refactoring module and attach your
var/log/messages.log

I'll attach the whole log after I create this issue, but in summary there is the following stack trace:

INFO [org.netbeans.api.java.source.ElementHandle]: Cannot resolve: ElementHandle[kind=OTHER; sigs=net.nanonation.ui.client.form.NGTimeFiel ]
INFO [org.netbeans.modules.refactoring.java.RetoucheUtils]: #120577: Cannot resolve ElementHandle[kind=OTHER; 
sigs=net.nanonation.ui.client.form.NGTimeFiel ]; file: /Users/pohl/Source/CP/trunk/CPLib/src/net/nanonation/ui/client/form/NG
TimeField.java
SEVERE [global]
java.lang.NullPointerException
        at org.netbeans.modules.refactoring.java.RetoucheUtils.getOverridingMethods(RetoucheUtils.java:219)
        at org.netbeans.modules.refactoring.java.plugins.RenameRefactoringPlugin.preCheck(RenameRefactoringPlugin.java:159)
        at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:318)
        at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:295)
        at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:680)
        at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:607)
        at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.run(JavaRefactoringPlugin.java:308)
        at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin$WorkingTask.access$100(JavaRefactoringPlugin.java:295)
        at org.netbeans.modules.refactoring.java.spi.JavaRefactoringPlugin.preCheck(JavaRefactoringPlugin.java:105)
[catch] at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPreCheck(AbstractRefactoring.java:347)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.preCheck(AbstractRefactoring.java:184)
        at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$10.run(ParametersPanel.java:482)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997)


Note that the class name mentioned in the first INFO log message above is actually called NGTimeField, not "NGTimeFiel".  Either the log message is 
truncating the name or perhaps this is somehow significant in the bug.