YUI uploader on OSX

Using the YUI uploader module (http://developer.yahoo.com/yui/uploader/), with OSX, irrespective of the browser, the upload does not progress to the next file. The onUploadComplete function in the attached code snippet  is the callback for the upload complete event (for a file). upload is the function called when the user clicks the upload button. dataArr contains the list of files to upload.Start Free Trial

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var uploadCounter = 0;
var dataArr;
 
function upload() {
	uploader.upload(idToUpload, '/authorized/image-upload?sid=' + session_id, 'POST', img_params);
}
 
function onUploadComplete(event) {
	if (uploadCounter < dataArr.length - 1) {
	    uploadCounter++;
	    upload();
	}
}