Mantis Plugin v0.4.2 shows error when trying after doing note in mantis bug:

FATAL: Conversion = 'V'
java.util.UnknownFormatConversionException: Conversion = 'V'
at java.util.Formatter$FormatSpecifier.conversion(Unknown Source)
at java.util.Formatter$FormatSpecifier.<init>(Unknown Source)
at java.util.Formatter.parse(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.io.PrintStream.format(Unknown Source)
at java.io.PrintStream.printf(Unknown Source)
at hudson.plugins.mantis.Utility.log(Utility.java:86)
at hudson.plugins.mantis.Updater.perform(Updater.java:80)
at hudson.plugins.mantis.MantisIssueUpdater.perform(MantisIssueUpdater.java:44)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:309)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:297)
at hudson.model.Build$RunnerImpl.post2(Build.java:118)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:282)
at hudson.model.Run.run(Run.java:802)
at hudson.model.Build.run(Build.java:85)
at hudson.model.ResourceController.execute(ResourceController.java:70)
at hudson.model.Executor.run(Executor.java:88)

The note is successfull applied in mantis.