`gem_original_require': no such file to load -- prawn/core (MissingSourceFile)

Hi,
I have uploaded all the files to the linux server(shared server), and
configured Database.yml, But when i try to run the server it show the
following error:

jailshell-3.2$ ruby script/server
=> Booting Mongrel
=> Rails 2.3.5 application starting on http://0.0.0.0:3000
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning:
Gem::Dependency#version_requirements is deprecated and will be removed
on or after August 2010. Use #requirement
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require': no such file to load -- prawn/core (MissingSourceFile) from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in
require' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in new_constants_in’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in
require' from /home/edritan/rails_apps/Shiksha/vendor/gems/prawn-0.6.3/lib/prawn.rb:2 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require’
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in
new_constants_in' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require’
from
/home/edritan/rails_apps/Shiksha/vendor/plugins/prawnto/lib/prawnto.rb:4
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in
require' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in new_constants_in’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in
require' from /home/edritan/rails_apps/Shiksha/vendor/plugins/prawnto/init.rb:1:in evaluate_init_rb’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:158:in
evaluate_init_rb' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/kernel/reporting.rb:11:in silence_warnings’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:154:in
evaluate_init_rb' from /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin.rb:48:in load’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:38:in
load_plugins' from /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:37:in each’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:37:in
load_plugins' from /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:369:in load_plugins’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:165:in
process' from /usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in send’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in run' from /home/edritan/rails_apps/Shiksha/config/environment.rb:6 from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require’
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require’
from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in
new_constants_in' from /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require’
from
/usr/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:84
from
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require’

Kindly help, as i tried reinstalling the prawn gem from again.

Thanks in Advance.