I recently added the email-ext 2.0 to my Hudson installation and after working
fine for a few builds I got an exception when a build went from failing to
successful. I did receive the success email though.

[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 14 minutes 17 seconds
[INFO] Finished at: Thu Apr 03 11:36:13 EDT 2008
[INFO] Final Memory: 27M/60M
[INFO] ------------------------------------------------------------------------
Recording test results
Sending e-mails to: spam.prevention@localhost
Email was triggered for: Success
There are 1 triggered emails.
Sending email for trigger: Success
FATAL: null
java.lang.NullPointerException
at
hudson.plugins.emailext.plugins.content.HudsonURLContent.getContent(HudsonURLContent.java:18)
at
hudson.plugins.emailext.ExtendedEmailPublisher.replaceTokensWithContent(ExtendedEmailPublisher.java:347)
at
hudson.plugins.emailext.ExtendedEmailPublisher.replaceTokensWithContent(ExtendedEmailPublisher.java:349)
at
hudson.plugins.emailext.ExtendedEmailPublisher.transformText(ExtendedEmailPublisher.java:327)
at
hudson.plugins.emailext.ExtendedEmailPublisher.createMail(ExtendedEmailPublisher.java:282)
at
hudson.plugins.emailext.ExtendedEmailPublisher.sendMail(ExtendedEmailPublisher.java:252)
at
hudson.plugins.emailext.ExtendedEmailPublisher._perform(ExtendedEmailPublisher.java:244)
at
hudson.plugins.emailext.ExtendedEmailPublisher.perform(ExtendedEmailPublisher.java:204)
at
hudson.tasks.BuildStepCompatibilityLayer.perform(BuildStepCompatibilityLayer.java:33)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:302)
at
hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:290)
at hudson.model.Build$RunnerImpl.post2(Build.java:135)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:275)
at hudson.model.Run.run(Run.java:767)
at hudson.model.Build.run(Build.java:102)
at hudson.model.ResourceController.execute(ResourceController.java:70)
at hudson.model.Executor.run(Executor.java:71)