FreePBX Administration Hangs when I click on Digium Addons

I have installed AsteriskNOW flawlessly and I am able to make outbound calls. I have been using FreePBX 2.7 with no problems until I was trying to install iLBC codec from terminal unsuccesfully. Suddenly when I tried to access ‘Digium Addons’, the FreePBX Administration GUI stopped responding and just keeps loading (I am using Chrome). When I go back to the main menu (ARI, FOP and Administration) I can access only ARI and FOP. When I click on FreePBX Administration, it just keeps waiting.

Does any one knows how to resolve this issue?

Thanks in Advance!