I was on magentoconnect and I added the following template http://www.magentocommerce.com/magento-connect/WebAndPeople/extension/5305/wp_theme_grayscale. When It was installed I went to the front end and got a 503 error, I couldn\\\\\\\’t get into the back end either. I was able to solve the issue by reinstalling magento.
I actually attempted this twice to make sure it was the template that was causing the error and the same thing happened.
Has anyone experienced this issue and how did you fix it so I can use this template? I\\\\\\\’m using Magento 1.6.