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 getting an error saying that the application is unsigned. I've attached screenshots of the error and the details thereof. Does anyone know how to fix this?

Answer 1

Via Terminal:

javaws ContestAppletProd.jnlp

However, your security settings may warn you:

This application cannot be downloaded because Java has been disabled through the web. You can enable Java on this system using the Java Control Panel.

Therefore, you might have to, via Terminal:

sudo javaws ContestAppletProd.jnlp

Answer 2

I run javaws -viewer and deleted all instances of TC there. Running the jnlp afterwards worked.

The fix was suggested by jthread on TopCoder here

Answer 3

Steps:

• In terminal: javaws -viewer
• Java Control Panel -> Security -> Edit Site List -> Add: http://www.topcoder.com and https://www.topcoder.com -> Save.
• Start Topcoder Arena applet again.

Answer 4

I tried the fix listed above (removing instances by running javaws -viewer). It did not work for me. What did work was to locate the downloaded ContestAppletProd.jnlp file and running it from a terminal using the following command" javaws ContestAppletProd.jnlp ". You want to run this in the folder containing the file ContestAppletProd.jnlp