when update wpscan to the latest version,i get this error:
Code:
root@bt:/usr/bin# ruby /pentest/web/wpscan2/wpscan.rb
[ERROR] no such file to load -- nokogiri

Nokogiri needs some packets, please run 'sudo apt-get install libxml2 libxml2-dev libxslt1-dev' to install them. Then run the command below

[TIP] Try to run 'gem install nokogiri' or 'gem install --user-install nokogiri'. If you still get an error, Please see README file or https://github.com/wpscanteam/wpscan
but the mokogiri is allready installed:
Code:
root@bt:/usr/bin# gem list

*** LOCAL GEMS ***

abstract (1.0.0)
actionmailer (3.0.6)
actionpack (3.0.6)
activemodel (3.0.6)
activerecord (3.0.6)
activeresource (3.0.6)
activesupport (3.0.6)
addressable (2.2.8)
arel (2.0.10, 2.0.9)
bson (1.5.2)
bson_ext (1.5.2)
builder (2.1.2)
bundler (1.0.13)
childprocess (0.3.3)
diff-lcs (1.1.2)
em-resolv-replace (1.1.2)
erubis (2.6.6)
factory_girl (1.3.3)
ffi (1.0.11)
fxruby (1.6.25)
hpricot (0.8.6)
http_configuration (1.0.4)
i18n (0.5.0)
json (1.7.3, 1.6.5)
libwebsocket (0.1.3)
mail (2.2.19)
mime-types (1.17.2, 1.16)
mini_exiftool (1.3.1)
mongo (1.5.2)
multi_json (1.3.6)
mysql (2.8.1)
nokogiri (1.5.5, 1.4.4)
polyglot (0.3.1)
rack (1.2.3, 1.2.2)
rack-mount (0.6.14)
rack-test (0.5.7)
rails (3.0.6)
railties (3.0.6)
rake (0.9.1, 0.8.7)
rchardet (1.3)
RedCloth (4.2.5)
rspec (2.6.0)
rspec-core (2.6.3)
rspec-expectations (2.6.0)
rspec-mocks (2.6.0)
rspec-rails (2.6.1)
rubyzip (0.9.6.1)
selenium-webdriver (2.24.0)
spider (0.4.4)
sqlite3-ruby (1.2.5)
thor (0.14.6)
treetop (1.4.9)
typhoeus (0.3.3, 0.2.4)
tzinfo (0.3.27)
watobo (0.9.8.724)
xml-simple (1.1.1, 1.1.0)
zip (2.0.2)