OpenNebula

After upgrading from 4.8 to 4.10 using official repository, sunstone fails to start with the following:
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- builder (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/one/ruby/vendors/rbvmomi/lib/rbvmomi/trivial_soap.rb:3:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/one/ruby/vendors/rbvmomi/lib/rbvmomi/connection.rb:4:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/one/ruby/vendors/rbvmomi/lib/rbvmomi.rb:11:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /var/lib/one/remotes/vmm/vcenter/vcenter_driver.rb:39:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/one/sunstone/routes/vcenter.rb:26:in `<top (required)>'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from /usr/lib/one/sunstone/sunstone-server.rb:323:in `block in <main>'
from /usr/lib/one/sunstone/sunstone-server.rb:322:in `each'
from /usr/lib/one/sunstone/sunstone-server.rb:322:in `<main>'


I've installed ruby-builder package manually and now it works as it should.