portupgrade しようとすると以下のようになる。

解決策はどうすれば？

# portupgrade -n portupgrade
/usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:118:in `fill': MOVED file format error (PortsDB::MOVEDError)
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:112:in `each'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:112:in `fill'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:111:in `open'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:111:in `fill'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:106:in `initialize'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:181:in `new'
from /usr/local/lib/ruby/site_ruby/1.8/portsdb.rb:181:in `setup'
from /usr/local/lib/ruby/site_ruby/1.8/pkgtools.rb:246:in `init_pkgtools_global'
from /usr/local/sbin/portupgrade:522:in `main'
from /usr/local/lib/ruby/1.8/optparse.rb:791:in `initialize'
from /usr/local/sbin/portupgrade:230:in `new'
from /usr/local/sbin/portupgrade:230:in `main'
from /usr/local/sbin/portupgrade:2234