[] Not understant this ClassNotFoudException

Hello,

I work actualy to develop Sonar Netbeans IDE.
But I can not arrive to understant and correct this error:
SEVERE [org.openide.util.Exceptions]
java.lang.NoClassDefFoundError: org/netbeans/modules/maven/api/NbMavenProje=
ct
=09at org.sonar.ide.netbeans.maven.SonarProviderImpl.findSourceCode(SonarPr=
oviderImpl.java:26)
=09at org.sonar.ide.netbeans.spi.ProjectSonarProvider$1.findSourceCode(Proj=
ectSonarProvider.java:28)
=09at org.sonar.ide.netbeans.utils.NetbeansResourceUtils.getProjectKey(Netb=
eansResourceUtils.java:68)
=09at org.sonar.ide.netbeans.utils.NetbeansResourceUtils.getProjectKey(Netb=
eansResourceUtils.java:36)
=09at org.sonar.ide.shared.AbstractResourceUtils.getComponentKey(AbstractRe=
sourceUtils.java:106)
=09at org.sonar.ide.shared.AbstractResourceUtils.getFileKey(AbstractResourc=
eUtils.java:143)
=09at org.sonar.ide.netbeans.editor.SonarTask.run(SonarTask.java:79)
=09at org.sonar.ide.netbeans.editor.SonarTask.run(SonarTask.java:41)
=09at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWra=
pper.run(JavaSourceAccessor.java:322)
[catch] at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.r=
un(TaskProcessor.java:715)
=09at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:44=
1)
=09at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
=09at java.util.concurrent.FutureTask.run(FutureTask.java:138)
=09at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec=
utor.java:886)
=09at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor=
.java:908)
=09at java.lang.Thread.run(Thread.java:662)


This is my module manifest:
Manifest-Version: 1.0
OpenIDE-Module-Localizing-Bundle: org/sonar/ide/netbeans/maven/Bundle.
 properties
OpenIDE-Module-Specification-Version: 0.1
OpenIDE-Module-Implementation-Version: 0.1-20110604
OpenIDE-Module-Build-Version: 201106040634
OpenIDE-Module: org.sonar.ide.netbeans.maven
OpenIDE-Module-Public-Packages: -
OpenIDE-Module-Requires: org.openide.modules.ModuleFormat1
OpenIDE-Module-Display-Category: org.codehaus.sonar-ide.netbeans
OpenIDE-Module-Name: Sonar IDEs :: NetBeans Maven Plugin
OpenIDE-Module-Short-Description: NetBeans parent Plugin for Sonar.
OpenIDE-Module-Long-Description: NetBeans parent Plugin for Sonar.
OpenIDE-Module-Module-Dependencies:  org.codehaus.sonar.ide.netbeans.n
 etbeans.sonar.plugin.core > 0.1, org.netbeans.modules.maven/2 > 2.9.2
 , org.netbeans.modules.maven.embedder/2 > 2.8.1, org.netbeans.modules
 .maven.model/1 > 1.14.1, org.netbeans.modules.projectapi/1 > 1.35.1,=20
 org.netbeans.modules.xml.catalog/2 > 1.23.1.4, org.netbeans.modules.x
 ml.xam/1 > 1.13.1.1, org.openide.awt > 7.30.1, org.openide.filesystem
 s > 7.46.1, org.openide.util > 8.0, org.openide.util.lookup > 8.0



Can you help me, i deploy on netbeans 7.0

Thanks for your help
S=C3=A9bastien GLON