My admin panel view fancy box not working
I also faced the same problem. This is due to jquery problem. Let me tell you that jquery contains default support to jquery. It uses older version of jquery in its core. So, if u want to use that module, then, what u can do is:


Download jquery update module and enable the moudle,
Then you open the project code, moudles folder and find the jquery update moulde, there you will find replace folder. You, will find various version of jquery there. You can include or replace the latest version of jquery.
However the drupal core works in older version, so what you can do is open the jquery_update.module file and find the line that says.

// Replace files for jQuery 1.7 and up
      if (version_compare($version, '1.7', '>=')) {
        $javascript['drupal.states']['js']['misc/states.js']['data'] = $path . '/replace/misc/1.7/states.js';
  }
Now what you need to do is. You need to check, if the user is logged in then replace the jquery with core old jquery and if user is not logged in then, use the latest your fancybox jquery.