The API changed So I've updated the code. This weekend, I'll incorporate the new data into the plug in, this is just a quickie to keep the plugin working for both of you using it. :)
Go to the Project Page and grab the tarball or the zip file.
For those unfamiliar with the plugin, it grabs the stock price for you from from http://www.alexadex.com and allows you to display it on your site.