NDepend SonarQube integration generates java.lang.NullPointerException - sonarqube

Question

When trying to integrate NDepend into SonarQube, a NullPointerException is generated saying that "The property "sonar.cs.ndepend.projectPath" must be set (to an absolute path)"
I followed the instructions but right now I'm at a loss. Any ideas, anyone?
NDepend version: 6.3.0 Professional
SonarQube version: 6.0
Full exception stacktrace:
ERROR: Error during SonarQube Scanner execution
java.lang.NullPointerException: The property "sonar.cs.ndepend.projectPath" must be set (to an absolute path).
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at org.sonar.plugins.ndepend.NDependConfiguration.checkAbsolutePath(NDependConfiguration.java:56)
at org.sonar.plugins.ndepend.NDependConfiguration.ndependProjectPath(NDependConfiguration.java:47)
at org.sonar.plugins.ndepend.NDependSensor.analyze(NDependSensor.java:84)
at org.sonar.plugins.ndepend.NDependSensor.analyse(NDependSensor.java:78)
at org.sonar.scanner.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:57)
at org.sonar.scanner.phases.SensorsExecutor.execute(SensorsExecutor.java:49)
at org.sonar.scanner.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:78)
at org.sonar.scanner.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:184)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.scanner.scan.ProjectScanContainer.scan(ProjectScanContainer.java:241)
at org.sonar.scanner.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:236)
at org.sonar.scanner.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:234)
at org.sonar.scanner.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:226)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.scanner.task.ScanTask.execute(ScanTask.java:47)
at org.sonar.scanner.task.TaskContainer.doAfterStart(TaskContainer.java:86)
at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)
at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)
at org.sonar.scanner.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:115)
at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:118)
at org.sonarsource.scanner.api.internal.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.sonarsource.scanner.api.internal.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:60)
at com.sun.proxy.$Proxy0.execute(Unknown Source)
at org.sonarsource.scanner.api.EmbeddedScanner.doExecute(EmbeddedScanner.java:240)
at org.sonarsource.scanner.api.EmbeddedScanner.runAnalysis(EmbeddedScanner.java:151)
at org.sonarsource.scanner.cli.Main.runAnalysis(Main.java:110)
at org.sonarsource.scanner.cli.Main.execute(Main.java:72)
at org.sonarsource.scanner.cli.Main.main(Main.java:60)

Answer 1

Do you specified the sonar.cs.ndepend.projectPath variable when executing the MSBuild.SonarQube.Runner.exe like this:
MSBuild.SonarQube.Runner.exe begin /key:{SonarQube project key} /name:{SQ project name} /version:{SQ project version} /d:sonar.cs.ndepend.projectPath={the path of ndproj}
Or do you launch the analysis using the sonar-runner command?