Null pointer exception when running scanner

[pearljamik]

When using sonar 6 or 4.5 the following error occurs:

ERROR: Error during SonarQube Scanner execution
java.lang.NullPointerException
at fr.sii.sonar.report.core.quality.save.QualitySaver.save(QualitySaver.java:39)
at fr.sii.sonar.report.core.quality.save.QualitySaver.save(QualitySaver.java:28)
at fr.sii.sonar.report.core.common.ReportSensor.analyse(ReportSensor.java:106)
at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:79)
at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:70)
at org.sonar.batch.phases.PhaseExecutor.execute(PhaseExecutor.java:119)
at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:194)
at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:93)
at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:78)
at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:233)
at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:228)
at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:221)
at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:93)
at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:78)
at org.sonar.batch.scan.ScanTask.scan(ScanTask.java:64)
at org.sonar.batch.scan.ScanTask.execute(ScanTask.java:51)
at org.sonar.batch.bootstrap.TaskContainer.doAfterStart(TaskContainer.java:125)
at org.sonar.api.platform.ComponentContainer.startComponents(ComponentContainer.java:93)
at org.sonar.api.platform.ComponentContainer.execute(ComponentContainer.java:78)
at org.sonar.batch.bootstrap.BootstrapContainer.executeTask(BootstrapContainer.java:173)
at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:95)

[noomidian]

do u have a sonar-project.properties defined in your project ?
Do you use Jenkins ?