jasmine-headless-webkit error

[chechekk]

OS: windows xp 32bit
with rubymine, railsinstaller installed.
but when I run a server, error comes as follows.

runnerw.exe C:\RailsInstaller\Ruby2.0.0\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:/AirCasting/script/rails server -b 127.0.0.1 -p 3000 -e development
C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/spec_set.rb:92:in block in materialize': Could not find jasmine-headless-webkit-0.8.4 in any of the sources (Bundler::GemNotFound) from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:inmap!'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:in materialize' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/definition.rb:114:inspecs'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/definition.rb:159:in specs_for' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/definition.rb:148:inrequested_specs'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/environment.rb:18:in requested_specs' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/runtime.rb:13:insetup'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler.rb:120:in setup' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/bundler-1.3.5/lib/bundler/setup.rb:17:in<top (required)>'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:110:in require' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:110:inrescue in require'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:35:in require' from C:/AirCasting/config/boot.rb:24:in<top (required)>'
from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require' from C:/RailsInstaller/Ruby2.0.0/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'
from C:/AirCasting/script/rails:5:in <top (required)>' from -e:1:inload'
from -e:1:in `

'

Process finished with exit code 1

I've also tried to run "gem install jasmine-headline-webkit" in the windows command line, it told me that

C:\Documents and Settings\Administrator>gem install jasmine-headless-webkit
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing jasmine-headless-webkit:
ERROR: Failed to build gem native extension.

C:/RailsInstaller/Ruby2.0.0/bin/ruby.exe extconf.rb

make: *** No rule to make target clean'. Stop. which: no gmake in (.;C:\RailsInstaller\DevKit\bin;C:\RailsInstaller\DevKit\ming w\bin;C:\RailsInstaller\Ruby2.0.0\bin;C:\RailsInstaller\Git\bin;C:\RailsInstalle r\Git\cmd;C:\RailsInstaller\Ruby1.9.3\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WIND OWS\System32\Wbem;C:\Program Files\Heroku\bin;C:\Program Files\ruby-1.9.2\bin;C: \Program Files\git\bin;C:\Program Files\git\cmd) which: no qmake-qt4 in (.;C:\RailsInstaller\DevKit\bin;C:\RailsInstaller\DevKit\ mingw\bin;C:\RailsInstaller\Ruby2.0.0\bin;C:\RailsInstaller\Git\bin;C:\RailsInst aller\Git\cmd;C:\RailsInstaller\Ruby1.9.3\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\ WINDOWS\System32\Wbem;C:\Program Files\Heroku\bin;C:\Program Files\ruby-1.9.2\bi n;C:\Program Files\git\bin;C:\Program Files\git\cmd) which: no qmake in (.;C:\RailsInstaller\DevKit\bin;C:\RailsInstaller\DevKit\ming w\bin;C:\RailsInstaller\Ruby2.0.0\bin;C:\RailsInstaller\Git\bin;C:\RailsInstalle r\Git\cmd;C:\RailsInstaller\Ruby1.9.3\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WIND OWS\System32\Wbem;C:\Program Files\Heroku\bin;C:\Program Files\ruby-1.9.2\bin;C: \Program Files\git\bin;C:\Program Files\git\cmd) C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/jasmine-headless-webkit-0.8 .4/lib/qt/qmake.rb:143:incheck_qmake!': undefined method strip' for nil:NilCl ass (NoMethodError) from C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/jasmine-headle ss-webkit-0.8.4/lib/qt/qmake.rb:38:inmake!'
from extconf.rb:8:in `

'

Gem files will remain installed in C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0
.0/gems/jasmine-headless-webkit-0.8.4 for inspection.
Results logged to C:/RailsInstaller/Ruby2.0.0/lib/ruby/gems/2.0.0/gems/jasmine-h
eadless-webkit-0.8.4/ext/jasmine-webkit-specrunner/gem_make.out

how to solve the problem? thank you