freebsd metaspolit

Freebsd 7.1 ruby 1.9.1 下载了metaspolit 之后运行msfconsole 总是出现下面的一堆错：
msf3/lib/zip/zip.rb:3:in `require': no such file to load -- iconv (LoadErro
r)
        from /opt/msf3/lib/zip/zip.rb:3:in `<top (required)>'
        from /opt/msf3/lib/zip.rb:1:in `require'
        from /opt/msf3/lib/zip.rb:1:in `<top (required)>'
        from /opt/msf3/lib/msf/core/db.rb:4:in `require'
        from /opt/msf3/lib/msf/core/db.rb:4:in `<top (required)>'
        from /opt/msf3/lib/msf/core/db_manager.rb:2:in `require'
        from /opt/msf3/lib/msf/core/db_manager.rb:2:in `<top (required)>'
        from /opt/msf3/lib/msf/core/framework.rb:63:in `require'
        from /opt/msf3/lib/msf/core/framework.rb:63:in `<class:Framework>'
        from /opt/msf3/lib/msf/core/framework.rb:12:in `<module:Msf>'
        from /opt/msf3/lib/msf/core/framework.rb:4:in `<top (required)>'
        from /opt/msf3/lib/msf/core.rb:33:in `require'
        from /opt/msf3/lib/msf/core.rb:33:in `<top (required)>'
        from /opt/msf3/lib/msf/ui/console/driver.rb:1:in `require'
        from /opt/msf3/lib/msf/ui/console/driver.rb:1:in `<top (required)>'
        from /opt/msf3/lib/msf/ui/console.rb:10:in `require'
        from /opt/msf3/lib/msf/ui/console.rb:10:in `<top (required)>'
        from /opt/msf3/lib/msf/ui.rb:10:in `require'
        from /opt/msf3/lib/msf/ui.rb:10:in `<top (required)>'
        from ./msfconsole:96:in `require'
        from ./msfconsole:96:in `<main>'


同志们点拔一下，如果能解决这个问题

此问题已解决，方法升级ports 然后从ports进行安装。