Unable to run Selenium script on IE

Unable to run Selenium script on IE

I've to run Selenium test on IE 10 browser. In order to run following
script, I did following:
Downloaded IEDriverServer(64 bit since my machine is 64 bit) from here
Put that (.exe) file in 'C://drivers' folder
Set path 'C://drivers' in environment variables
Run script
require 'selenium-webdriver'
driver = Selenium::WebDriver.for :ie
driver.get "http://www.google.com"
button = driver.find_element(:id, "gbqfba")
puts button.text
driver.quit
Running aboe script result into following error:
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/response.rb:51:in
`assert_ok': Unable to find element with id == gbq
fba (Selenium::WebDriver::Error::NoSuchElementError)
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/response.rb:15:in
`initialize'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:59:in
`new'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:59:in
`create_response'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/default.rb:66:in
`request'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/http/common.rb:40:in
`call'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:629:in
`raw_execute'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:607:in
`execute'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/remote/bridge.rb:575:in
`find_element_by'
from
c:/Ruby193/lib/ruby/gems/1.9.1/gems/selenium-webdriver-2.33.0/lib/selenium/webdriver/common/search_context.rb:42:in
`find_element'
from ie.rb:7:in `<main>'
Same script runs fine with Chrome and Firefox browser. Please help me to
understand where I'm doing wrong.