jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON data -- FireBu

jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON data -- FireBug reports this error. Any solution?
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jQuery : SyntaxError: JSON.parse: unexpected character at line 1 column 2 of the JSON data -- FireBug reports this error. Any solution?
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Any jQuery unexpected JSON.parse: : line of JSON 2 the 1 at data SyntaxError: reports character column this -- error. solution? FireBug