Mac OS does not open TopCoder Arena to open

Question

I\'m running Mac OX 10.7.4 with the latest version of Java. I wanted to access TopCoder\'s Competition Arena, so I downloaded the .jnlp and tried to open it. However, I keep get

Answer 1

Open Java Control Panel and go to security tab. First, add these sites to Exception Site List:

http://www.topcoder.com, http://topcoder.com, http://arena.topcoder.com
https://www.topcoder.com, https://topcoder.com, https://arena.topcoder.com

Then run the command javaws -viewer via terminal and delete existing TopCoder instances. Running sudo javaws ContestAppletProd.jnlp should work without any problem. In my case, I double clicked the ContestAppletProd.jnlp file and faced no issues.