Erreur de construction Eclipse Juno avec "Maven Project Builder"

Quand j'ai essayer de nettoyer & construire mon projet Maven j'obtiens l'erreur suivante:

Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/project/MavenProject
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/project/MavenProject

de la même façon avec les nettoyer tous les processus, il jette la suivante:

Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
loader constraint violation: loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) previously initiated loading for a different type with name "org/apache/maven/plugin/MojoExecution"
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution
Errors running builder 'Maven Project Builder' on project '(Hid Project Name)'.
org/apache/maven/plugin/MojoExecution

Les idées de ce que les causes de cette?

source d'informationauteur BanksySan | 2013-02-04