RSS shows blank page

Hi everybody,

The RSS feed shows blank….. I search others’ posts but didn’t find a solution.

I have tried:
1) Switch the theme to basic Twenty Twelve,
2) Deactivate all plugin
3) No modification of CSS and any system files.
4) Permalink on and off and on and off (now is on)

Still show blank. However, when I input the RSS URL to RSS reader, such as Google and Feedy, they show up content (but no image)

When I test the RSS URL to http://feedvalidator.org, it reports “not validate”

Here is my feed : http://www.eggstudio.com/feed/

I haven’t tried out reload WordPress because I am afraid that causes more trouble.

Thanks for advise!!

Kay