we receive a NPE after a build from a specific config ( happens only at this config ) is run, and the configuration is in error afterwards - but everything worked except no mails were sent.

The exception form the log:

2013-11-28 14:49:12,904 [pool-1-thread-4718] INFO com.pmease.quickbuild.plugin.report.engine.contribution.publisher.StatisticsReportPublisher - Finished collecting statistics data for report 'SCM Changes' [configuration: 1508, build: 98436]
2013-11-28 14:49:12,912 [pool-1-thread-4718] ERROR com.pmease.quickbuild.DefaultBuildEngine - Error processing build request.
java.lang.NullPointerException
at com.pmease.quickbuild.plugin.report.changes.generator.ChangesStatsGenerator.generate(ChangesStatsGenerator.java:60)
at com.pmease.quickbuild.plugin.report.engine.contribution.publisher.StatisticsReportPublisher.doPublish(StatisticsReportPublisher.java:133)
at com.pmease.quickbuild.plugin.report.engine.contribution.publisher.StatisticsReportPublisher.collectStatistics(StatisticsReportPublisher.java:111)
at com.pmease.quickbuild.DefaultBuildEngine.process(DefaultBuildEngine.java:376)
at com.pmease.quickbuild.DefaultBuildEngine.access$000(DefaultBuildEngine.java:121)
at com.pmease.quickbuild.DefaultBuildEngine$2.run(DefaultBuildEngine.java:954)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)