Let me explain the problem. When you clicked on the login button the popup would open but an error message "Another plugin has redirected the page..." and the login would fail.
After stifting through the forums I found that problem was happening to many other site owners. The issue is with the site caching it's pages for faster loading. The login module also got cached with caused the error and the message. The simple solution would be to turn off caching but will cause the site to load a little slower.
So, by using the plugin by Crosstec I added the module to the list and it was not cached along with the rest of the site. Problem solved.