I'm not sure what is happening, but I am unable to remove the preview window. The "Show Preview Window" opens/closes a second preview window and there seems to be a default preview window that is unclosable.
Screenshot of the default (there is no close button): http://screencast.com/t/ruwZjvVK
Screenshot of the two open. I can close the right most one: http://screencast.com/t/ohjAoqmR3Po
I'm not sure what is happening, but I am unable to remove the preview window. The "Show Preview Window" opens/closes a second preview window and there seems to be a default preview window that is unclosable.
Screenshot of the default (there is no close button): http://screencast.com/t/ruwZjvVK
Screenshot of the two open. I can close the right most one: http://screencast.com/t/ohjAoqmR3Po