rem: dfd.errback(new Error("bad http response code:" + dfd.ioArgs.xhr.status)); 
add: var err = new Error("Unable to load "+uri+" status:"+ xhr.status); err.status = xhr.status; err.responseText = xhr.responseText; dfd.errback(err); 
context: 	var _resHandle = function(/*Deferred*/dfd){		if(_d._isDocumentOk(dfd.ioArgs.xhr)){			dfd.callback(dfd);		}else{			dfd.errback(new Error("bad http response code:" + dfd.ioArgs.xhr.status));		}	}
meta: 4497	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4497/31ff3793be777ed4ec7332017d4ac48874e2e55e/xhr.js/buggy/_base/xhr.js