UI shows an error when creating a view but the view is created

Client-side error-report for user "Administrator" on node 'ns_1@10.114.237.71':
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.75 Safari/535.7
Browser client XHR failure encountered. (age: 1207) Diagnostic info:
s: {"url":"/couchBase/default/_design/dev_two","isLocal":false,"global":true,"type":"PUT","contentType":"application/json","processData":true,"async":true,"accepts":

{"xml":"application/xml, text/xml","html":"text/html","text":"text/plain","json":"application/json, text/javascript","*":"*/*","script":"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"}

,"contents":{"xml":{},"html":{},"json":{},"script":{}},"responseFields":

{"xml":"responseXML","text":"responseText"}

,"converters":

{"text html":true}

,"jsonp":"callback","timeout":30000,"cache":false,"dataType":"json","data":"{\"_id\":\"_design/dev_two\",\"views\":{\"two\":{\"map\":\"function (doc)

{\\n emit(doc._id, null);\\n}

\"}}}","dataTypes":["text","json"],"crossDomain":false,"hasContent":true}
xhrStatus: error,
errMsg: ,
statusCode: 0,
responseText: