The plugin installed just fine, added a category, and when I went to "Add New Item" filled out the information, and clicked "Upload Image" and "Upload Thumbnail", it doesn't do anything. I tried in Chrome and Firefox. Because of this, I can't add anything to the portfolio.
Are you supposed to be able to select an image from your computer after clicking on upload image or upload thumbnail and upload it to your site? If so, then it, unfortunately is not working.