Recent flickr api problem

I ju开发者_JS百科st recently had problem accessing the getSizes API. I tested it in flickr api site and it returns empty string.

My security setting is set to public. Are there any changes or should I do that I missed. This just happened recently.

Thanks in advance.

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The site is not blank, I just had to right click on it and view source. :) sorry for such a NOOB.