java.lang.NoClassDefFoundError: Could not initialize class edu.umd.cs.findbugs.ba.AnalysisContext
   at edu.umd.cs.findbugs.FindBugs2.clearCaches(FindBugs2.java:321)
   at edu.umd.cs.findbugs.FindBugs2.execute(FindBugs2.java:301)
   at org.netbeans.modules.findbugs.RunFindBugs.runFindBugs(RunFindBugs.java:291)
   at org.netbeans.modules.findbugs.AnalyzerImpl$2.run(AnalyzerImpl.java:312)
   at org.netbeans.modules.findbugs.AnalyzerImpl$2.run(AnalyzerImpl.java:310)
   at org.netbeans.modules.java.source.parsing.MimeTask.run(MimeTask.java:83)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609)
   at org.netbeans.modules.parsing.api.ParserManager$MimeTaskAction.run(ParserManager.java:380)
   at org.netbeans.modules.parsing.api.ParserManager$MimeTaskAction.run(ParserManager.java:363)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:334)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:415)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:407)
   at org.netbeans.modules.findbugs.AnalyzerImpl.doRunFindBugs(AnalyzerImpl.java:310)
   at org.netbeans.modules.findbugs.AnalyzerImpl.analyze(AnalyzerImpl.java:185)
   at org.netbeans.modules.analysis.RunAnalysis$1$1.doRunAnalyzer(RunAnalysis.java:209)
   at org.netbeans.modules.analysis.RunAnalysis$1$1.run(RunAnalysis.java:165)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)