Spring Roo addon Error

Running through the Rapid tutorial and after i reach the part where i want to add custom addons to my project and i run the command Vaadin Widgetset create

I receive this error;

[ERROR]
 No plugin found for prefix 'vaadin' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo]
 available from the repositories [local (/home/ailima/.m2/repository), spring-maven-release ( http://maven.springframework.org/release), spring-maven-milestone ( http://maven.springframework.org/milestone), spring-roo-repository ( http://spring-roo-repository.springsource.org/release), central ( http://repo1.maven.org/maven2)]
 -> [Help 1]

[ERROR]
 
[ERROR]
 To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR]
 Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
 
[ERROR]
 For more information about the errors and possible solutions, please read the following articles:
[ERROR]
 [Help 1]
  http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException

any help is appreciated