/usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:301:in `report_activate_error': Co
uld not find RubyGem rake (> 0) (Gem::LoadError)
from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:238:in `activate'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:76:in `active_gem_wit
h_options'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:50:in `gem'
from /usr/local/bin/rake:15
when I run "gem", it throws error:
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original
_require': no such file to load -- sources (LoadError)
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/source_info_cache.rb:6
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/remote_installer.rb:12
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:112:in `manage_gems'
from /usr/local/bin/gem:10
Please help to fix.
Thanks.