Erreur when I try to build exo-maven plugin

["FLORENT.TROLAT" <FLORENT.TROLAT@xxxxxxxx>]

Hi,

I've tried to follow "Build the exo Plateform" to ... build the exo 
plateform on a linux system.

I believe I've followed the instructions:
      end of step 4 :  I have to run mvn install in 
exo-tools/maven2/plugins/exo directory to build plugin but I've the 
following error in the term

Thank you for your help :-).

[root@dhcp0310 exo]# ls
pom.xml  src
[root@dhcp0310 exo]# mvn install
[INFO] Scanning for projects...
[INFO] 
----------------------------------------------------------------------------
[INFO] Building Exo Maven Plugin
[INFO]    task-segment: [install]
[INFO] 
----------------------------------------------------------------------------
[INFO] artifact org.apache.maven.plugins:maven-plugin-plugin: checking 
for updates from central
[WARNING] repository metadata for: 'artifact 
org.apache.maven.plugins:maven-plugin-plugin' could not be retrieved 
from repository: central due to an error: Error transferring file
[INFO] Repository 'central' will be blacklisted
[INFO] 
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] 
------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-plugin-plugin' does 
not exist or no valid version could be found
[INFO] 
------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] 
------------------------------------------------------------------------
[INFO] Total time: 3 minutes 10 seconds
[INFO] Finished at: Tue Mar 27 18:33:58 CEST 2007
[INFO] Final Memory: 1M/2M
[INFO] 
------------------------------------------------------------------------
[root@dhcp0310 exo]# mvn install
[INFO] Scanning for projects...
[INFO] 
----------------------------------------------------------------------------
[INFO] Building Exo Maven Plugin
[INFO]    task-segment: [install]
[INFO] 
----------------------------------------------------------------------------
[INFO] 
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] 
------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-plugin-plugin' does 
not exist or no valid version could be found
[INFO] 
------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] 
------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue Mar 27 18:35:02 CEST 2007
[INFO] Final Memory: 1M/2M
[INFO] 
------------------------------------------------------------------------
[root@dhcp0310 exo]# mvn install -e
+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] 
----------------------------------------------------------------------------
[INFO] Building Exo Maven Plugin
[INFO]    task-segment: [install]
[INFO] 
----------------------------------------------------------------------------
[INFO] 
------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] 
------------------------------------------------------------------------
[INFO] The plugin 'org.apache.maven.plugins:maven-plugin-plugin' does 
not exist or no valid version could be found
[INFO] 
------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: The plugin 
'org.apache.maven.plugins:maven-plugin-plugin' does not exist or no 
valid version could be found
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1286)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1522)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindLifecycleForPackaging(DefaultLifecycleExecutor.java:1016)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:980)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:458)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:330)
       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:123)
       at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:585)
       at 
org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
       at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
       at 
org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)        
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: 
org.apache.maven.plugin.version.PluginVersionNotFoundException: The 
plugin 'org.apache.maven.plugins:maven-plugin-plugin' does not exist or 
no valid version could be found
       at 
org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:228)
       at 
org.apache.maven.plugin.version.DefaultPluginVersionManager.resolvePluginVersion(DefaultPluginVersionManager.java:90)
       at 
org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:161)
       at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1257)
       ... 18 more
[INFO] 
------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue Mar 27 18:35:25 CEST 2007
[INFO] Final Memory: 1M/2M
[INFO] 
------------------------------------------------------------------------
[root@dhcp0310 exo]