JMeter + Selenium testing stops after Firefox is opened

I tried to learn JMeter+Selenium but there is small problem: I started with this: http://ift.tt/1ArLXHz done everything to the heading "Code Review". When I run Thread group it opens Firefox but does not open requested website.

My FF version is 34.0.5

JMeterPlugins-WebDriver-1.2.0

Any ideas?