Hello, Seems I have some new issue with the xwiki-platform-tool-packager-plugin ... I migrated to XWiki 5.1 (and then 5.2-milestone-2) and in both cases I get the following when building: [INFO] Copying HSQLDB JDBC Driver JAR ... [INFO] Copying Skins ... Downloading: http://nexus.xwiki.org/nexus/content/groups/public/org/xwiki/platform/xwiki… Downloaded: http://nexus.xwiki.org/nexus/content/groups/public/org/xwiki/platform/xwiki… B at 0.0 KB/s ec) [INFO] Extracting SmartClient ... [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1:57.850s [INFO] Finished at: Fri Sep 27 18:27:54 CEST 2013 [INFO] Final Memory: 33M/247M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.xwiki.platform:xwiki-platform-tool-packager-plugin:5.2-milestone-2:package (default) on project xwiki-contrib-mailarchive-test-tests: Execution d efault of goal org.xwiki.platform:xwiki-platform-tool-packager-plugin:5.2-milestone-2:package failed: For artifact {com.smartgwt:smartgwt:null:jar}: The version cannot be empty. -> [Help 1] Should I specify this smartgwt artifact in my pom ?