The Option Dradis under the System services does not work Giving Folowing Error
When you start the server dradis

/usr/lib/dradis/server/vendor/bundle/ruby/1.9.1/gems/RedCloth-4.2.8/lib/redcloth.rb:10: Use RbConfig instead of obsolete and deprecated Config.
Rails Error: Unable to access log file. Please ensure that /usr/lib/dradis/server/log/production.log exists and is chmod 0666. The log level has been raised to WARN and the output directed to STDERR until the problem is fixed.

I tried install by down loading,
When I tried 'install bundle"

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb
extconf.rb:10: Use RbConfig instead of obsolete and deprecated Config.
checking for libxml/parser.h... yes
checking for libxslt/xslt.h... no
-----
libxslt is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.
-----
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/ruby1.9.1
--with-zlib-dir
--without-zlib-dir
--with-zlib-include
--without-zlib-include=${zlib-dir}/include
--with-zlib-lib
--without-zlib-lib=${zlib-dir}/lib
--with-iconv-dir
--without-iconv-dir
--with-iconv-include
--without-iconv-include=${iconv-dir}/include
--with-iconv-lib
--without-iconv-lib=${iconv-dir}/lib
--with-xml2-dir
--without-xml2-dir
--with-xml2-include
--without-xml2-include=${xml2-dir}/include
--with-xml2-lib
--without-xml2-lib=${xml2-dir}/lib
--with-xslt-dir
--without-xslt-dir
--with-xslt-include
--without-xslt-include=${xslt-dir}/include
--with-xslt-lib
--without-xslt-lib=${xslt-dir}/lib


Gem files will remain installed in /var/lib/gems/1.9.1/gems/nokogiri-1.5.0 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/nokogiri-1.5.0/ext/nokogiri/gem_make.out
An error occurred while installing nokogiri (1.5.0), and Bundler cannot
continue.
Make sure that `gem install nokogiri -v '1.5.0'` succeeds before bundling.

Although I installed nokogiri it still gave the same error

Can Anybody help me?