I add a new module in my m2 reactor build and I have the following stack trace :

Parsing POMs
ERROR: Processing failed due to a bug in the code. Please report this to
users@hudson.dev.java.net
java.lang.NullPointerException
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:430)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:354)
at hudson.model.Run.run(Run.java:1120)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:303)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:123)
project=hudson.maven.MavenModuleSet@1f95cce[accommons-libs]
project.getModules()=[hudson.maven.MavenModule@1f2412a[accommons-libs/com.accor.commons:accommons-libs-root],
hudson.maven.MavenModule@194566d[accommons-libs/com.accor.commons:split-tars],
hudson.maven.MavenModule@1b64b70[accommons-libs/com.accor.commons.cache:accommons-cache],
hudson.maven.MavenModule@112bc7b[accommons-libs/com.accor.commons.configuration:plexus-configuration],
hudson.maven.MavenModule@11456c5[accommons-libs/com.accor.commons.configuration:plexus-configuration-api],
hudson.maven.MavenModule@4ca42b[accommons-libs/com.accor.commons.configuration:plexus-configuration-jdbc],
hudson.maven.MavenModule@1ae0e7d[accommons-libs/com.accor.commons.configuration:plexus-configuration-prefs],
hudson.maven.MavenModule@393167[accommons-libs/com.accor.commons.plexus:accommons-plexus-utils],
hudson.maven.MavenModule@da8742[accommons-libs/com.accor.commons.plexus.components:accommons-plexus-components],
hudson.maven.MavenModule@e637f0[accommons-libs/com.accor.commons.plexus.components:jdbc-connection-pool],
hudson.maven.MavenModule@627b5c[accommons-libs/com.accor.commons.plexus.components:stored-procedure-parser],
hudson.maven.MavenModule@190d536[accommons-libs/com.accor.commons.prefs:accommons-prefs],
hudson.maven.MavenModule@19deddb[accommons-libs/com.accor.commons.storedprocedure:stored-procedure-executor],
hudson.maven.MavenModule@16acad2[accommons-libs/com.accor.commons.storedprocedure:stored-procedure-executor-api],
hudson.maven.MavenModule@29b849[accommons-libs/com.accor.commons.storedprocedure:stored-procedure-executor-model],
hudson.maven.MavenModule@101e081[accommons-libs/com.accor.commons.tools:accommons-tools],
hudson.maven.MavenModule@157f72[accommons-libs/com.accor.commons.tools:jersey-apache-client],
hudson.maven.MavenModule@3a4822[accommons-libs/com.accor.commons.transporter:file-transporters],
hudson.maven.MavenModule@55bfaf[accommons-libs/com.accor.commons.xmlschemas:schemas-validator],
hudson.maven.MavenModule@19b7c62[accommons-libs/com.accor.commons.xmlschemas:schemas-validator-api],
hudson.maven.MavenModule@1031310[accommons-libs/com.accor.commons.xmlschemas:schemas-validator-jaxp],
hudson.maven.MavenModule@d8978c[accommons-libs/com.accor.commons.xmlschemas:schemas-validator-msv],
hudson.maven.MavenModule@1c5a33b[accommons-libs/com.accor.components.cache:spring-cache],
hudson.maven.MavenModule@5facbd[accommons-libs/com.accor.components.cache:spring-cache-api],
hudson.maven.MavenModule@145c414[accommons-libs/com.accor.components.cache:spring-cache-ehcache],
hudson.maven.MavenModule@14c02d4[accommons-libs/com.accor.components.cache:spring-cache-hashmap],
hudson.maven.MavenModule@14db52b[accommons-libs/com.accor.components.cache:spring-cache-oscache],
hudson.maven.MavenModule@b124fa[accommons-libs/com.accor.components.cache:spring-cache-providers],
hudson.maven.MavenModule@1f2a9da[accommons-libs/com.accor.components.cache:spring-cache-test],
hudson.maven.MavenModule@6d4f30[accommons-libs/com.accor.components.cache:spring-cache-whirlycache],
hudson.maven.MavenModule@6a150e[accommons-libs/com.accor.hudson.plugins:hudson-plugins],
hudson.maven.MavenModule@8c4b5f[accommons-libs/com.accor.hudson.plugins:mavenrelease],
hudson.maven.MavenModule@a84b47[accommons-libs/commons-logging:commons-logging],
hudson.maven.MavenModule@e64795[accommons-libs/commons-logging:commons-logging-api],
hudson.maven.MavenModule@659812[accommons-libs/commons-logging:commons-logging-parent]]
project.getRootModule()=hudson.maven.MavenModule@1f2412a[accommons-libs/com.accor.commons:accommons-libs-root]
FATAL: null
java.lang.NullPointerException
at hudson.maven.MavenModuleSetBuild$RunnerImpl.doRun(MavenModuleSetBuild.java:430)
at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:354)
at hudson.model.Run.run(Run.java:1120)
at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:303)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:123)