Unable to add new site

I’ve installed Piwik yesterday for one of my websites. I uploaded all the files in the server and installed the tracking code in the site. I worked like a charm. But the problem arose when I tried to add a new site. I entered the required info in the respective boxes and on clicking the “save” button (the extreme right one) a “data loading” animation appeared, but nothing else happened. I tried it in 4 to 5 different browsers, but faced the same result every where. Please help.

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