I tried to configure the mail notification for failed builds.

After a build failed i get this exception:

[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] There was test failures.
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2 minutes 32 seconds
[INFO] Finished at: Tue Nov 17 18:49:54 CET 2009
[INFO] Final Memory: 26M/48M
[INFO] ------------------------------------------------------------------------
Warte bis Hudson die Datensammlung abgeschlossen hat
ERROR: Processing failed due to a bug in the code. Please report this to users@hudson.dev.java.net
java.lang.ClassCastException: hudson.plugins.templateproject.ProxySCM cannot be cast to hudson.scm.SubversionSCM
at hudson.scm.SubversionChangeLogSet$LogEntry.preparePath(SubversionChangeLogSet.java:175)
at hudson.scm.SubversionChangeLogSet$LogEntry.access$200(SubversionChangeLogSet.java:118)
at hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:166)
at hudson.scm.SubversionChangeLogSet$LogEntry$1.get(SubversionChangeLogSet.java:164)
at java.util.AbstractList$Itr.next(AbstractList.java:345)
at hudson.maven.MavenModuleSetBuild$1.isDescendantOf(MavenModuleSetBuild.java:200)
at hudson.maven.MavenModuleSetBuild$1.<init>(MavenModuleSetBuild.java:170)
at hudson.maven.MavenModuleSetBuild.getChangeSetFor(MavenModuleSetBuild.java:164)
at hudson.maven.FilteredChangeLogSet.<init>(FilteredChangeLogSet.java:52)
at hudson.maven.MavenBuild.getChangeSet(MavenBuild.java:159)
at hudson.model.AbstractBuild.hasParticipant(AbstractBuild.java:314)
at hudson.model.AbstractProject.hasParticipant(AbstractProject.java:1089)
at hudson.model.User.getProjects(User.java:377)
at hudson.tasks.MailAddressResolver$DefaultAddressResolver.findMailAddressFor(MailAddressResolver.java:148)
at hudson.tasks.MailAddressResolver.resolve(MailAddressResolver.java:86)
at hudson.tasks.Mailer$UserProperty.getAddress(Mailer.java:476)
at hudson.tasks.MailSender.buildCulpritList(MailSender.java:344)
at hudson.tasks.MailSender.createEmptyMail(MailSender.java:325)
at hudson.tasks.MailSender.createFailureMail(MailSender.java:198)
at hudson.tasks.MailSender.getMail(MailSender.java:133)
at hudson.tasks.MailSender.execute(MailSender.java:81)
at hudson.maven.reporters.MavenMailer.end(MavenMailer.java:54)
at hudson.maven.MavenModuleSetBuild$Builder.end(MavenModuleSetBuild.java:679)
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:483)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:383)
at hudson.model.Run.run(Run.java:1176)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:304)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:123)

Hudson version is: 1.333
The Project is a maven multi module project which uses Subversion as its SCM. I have the "Hudson Template Project plugin" installed. However my project is not using the Template
Project Plugin.