When hudson is trying to collect the findbugs results its throwing a fatal warning.

[findbugs] Warnings generated: 114
[findbugs] Missing classes: 31
[findbugs] Calculating exit code...
[findbugs] Setting 'missing class' flag (2)
[findbugs] Setting 'bugs found' flag (1)
[findbugs] Exit code set to: 3
[findbugs] Java Result: 3
[findbugs] Classes needed for analysis were missing
[findbugs] Output saved to C:\Users\vpatel\.hudson\jobs\xxx\workspace\xxx\xxx\findbugs.xml

BUILD SUCCESSFUL
Total time: 3 minutes 43 seconds
[FINDBUGS] Collecting findbugs analysis files...
FATAL: edu.umd.cs.findbugs.cloud.Cloud.isInCloud(Ledu/umd/cs/findbugs/BugInstance;)Z
java.lang.NoSuchMethodError: edu.umd.cs.findbugs.cloud.Cloud.isInCloud(Ledu/umd/cs/findbugs/BugInstance;)Z
at hudson.plugins.findbugs.parser.FindBugsParser.setCloudInformation(FindBugsParser.java:268)
at hudson.plugins.findbugs.parser.FindBugsParser.parse(FindBugsParser.java:227)
at hudson.plugins.findbugs.parser.FindBugsParser.parse(FindBugsParser.java:139)
at hudson.plugins.findbugs.parser.FindBugsParser.parse(FindBugsParser.java:99)
at hudson.plugins.analysis.core.FilesParser.parseFile(FilesParser.java:197)
at hudson.plugins.analysis.core.FilesParser.parseFiles(FilesParser.java:176)
at hudson.plugins.analysis.core.FilesParser.invoke(FilesParser.java:126)
at hudson.plugins.analysis.core.FilesParser.invoke(FilesParser.java:29)
at hudson.FilePath.act(FilePath.java:753)
at hudson.FilePath.act(FilePath.java:735)
at hudson.plugins.findbugs.FindBugsPublisher.perform(FindBugsPublisher.java:131)
at hudson.plugins.analysis.core.HealthAwarePublisher.perform(HealthAwarePublisher.java:280)
at hudson.tasks.BuildStepMonitor$2.perform(BuildStepMonitor.java:27)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:601)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:580)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:558)
at hudson.model.Build$RunnerImpl.post2(Build.java:157)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:528)
at hudson.model.Run.run(Run.java:1348)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:139)