java.lang.AssertionError
        at edu.umd.cs.findbugs.ba.AbstractClassMember.<init>(AbstractClassMember.java:41)
        at edu.umd.cs.findbugs.ba.AbstractField.<init>(AbstractField.java:27)
        at edu.umd.cs.findbugs.ba.InstanceField.<init>(InstanceField.java:29)
        at edu.umd.cs.findbugs.ba.XFactory.createXField(XFactory.java:238)
        at edu.umd.cs.findbugs.ba.XFactory.createXField(XFactory.java:375)
        at com.mebigfatguy.fbcontrib.detect.Section508Compliance.sawOpcode(Section508Compliance.java:188)
        at edu.umd.cs.findbugs.visitclass.DismantleBytecode.visit(DismantleBytecode.java:675)
        at edu.umd.cs.findbugs.visitclass.BetterVisitor.visitCode(BetterVisitor.java:217)
        at edu.umd.cs.findbugs.visitclass.PreorderVisitor.visitCode(PreorderVisitor.java:148)
        at com.mebigfatguy.fbcontrib.detect.Section508Compliance.visitCode(Section508Compliance.java:150)
        at org.apache.bcel.classfile.Code.accept(Code.java:132)
        at edu.umd.cs.findbugs.visitclass.PreorderVisitor.doVisitMethod(PreorderVisitor.java:201)
        at edu.umd.cs.findbugs.visitclass.PreorderVisitor.visitJavaClass(PreorderVisitor.java:230)
        at org.apache.bcel.classfile.JavaClass.accept(JavaClass.java:204)
        at edu.umd.cs.findbugs.BytecodeScanningDetector.visitClassContext(BytecodeScanningDetector.java:36)
        at com.mebigfatguy.fbcontrib.detect.Section508Compliance.visitClassContext(Section508Compliance.java:111)
        at edu.umd.cs.findbugs.DetectorToDetector2Adapter.visitClass(DetectorToDetector2Adapter.java:64)
        at edu.umd.cs.findbugs.FindBugs2.analyzeApplication(FindBugs2.java:658)
        at edu.umd.cs.findbugs.FindBugs2.execute(FindBugs2.java:185)
        at org.nbheaven.sqe.bridge.findbugs.output.FindBugsSession.executeFindBugs(FindBugsSession.java:221)
        at org.nbheaven.sqe.bridge.findbugs.output.FindBugsSession.computeResult(FindBugsSession.java:78)
        at org.nbheaven.sqe.codedefects.resultui.action.AbstractRunSingleSQEAction$Processor.execute(AbstractRunSingleSQEAction.java:109)
        at org.nbheaven.sqe.codedefects.resultui.action.AbstractRunSingleSQEAction.performAction(AbstractRunSingleSQEAction.java:50)
        at org.openide.util.actions.NodeAction.performAction(NodeAction.java:289)
        at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:118)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable.actionPerformed(ActionsBridge.java:111)
        at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:104)
        at org.netbeans.modules.openide.actions.ActionsBridgeImpl.invokeAction(ActionsBridgeImpl.java:52)
        at org.netbeans.modules.openide.util.ActionsBridge$ActionRunnable.doRun(ActionsBridge.java:102)
        at org.netbeans.modules.openide.util.ActionsBridge$1.run(ActionsBridge.java:71)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)