Chromephp Logger

I am trying to display the output using ChromePhp::log('hello console') in console but its not displaying anything. I have added the extension and re-install google chrome but then too its not working.
Initially it was working but when i updated my current Google chrome updates in Ubuntu 12.04 it stopped displaying in console.
I also tried in other systems where Google chrome version is not the same as mine, and its working fine there.
My current version is 28.0.1500.71.
I tried to download old version of Google chrome but could not find one.
Please help me.

thankyou in advance