[xwiki-users] Failure while trying to follow "Writing XWiki components" tutorial

When I try to use Maven as described in the tutorial, I get an error: PS D:\Data\Java\x> mvn archetype:generate -DarchetypeArtifactId=xwiki-commons-component-archetype -DarchetypeGroupId=org.xwiki.commons -DarchetypeVersion=3.3 [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.130s [INFO] Finished at: Mon May 28 16:35:02 BST 2012 [INFO] Final Memory: 2M/15M [INFO] ------------------------------------------------------------------------ [ERROR] The goal you specified requires a project to execute but there is no POM in this directory (D:\Data\Java\x). Please verify you invoked Maven from the correct directory. -> [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/MissingProjectException I'm a little concerned about the "-DarchetypeVersion=3.3" flag. I'm using XWiki 4.0. Is this page out of date? Sorry if I haven't given the right details, I haven't used Maven before so I'm not sure what I should do next. Paul.