Hi,
The problem is, that wordpress does not allow fetching images from across multisite installations, without switching blogs. Unfortunately, there is no hook to properly bypass that without making major modifications to the core theme codes.
You can however try one of the constants from the knowledge base, that may help:
/**
* When defined, the plugin tries to fix the image sources on the search results
* page on WP multisite environments.
* WARNING: Make sure to test the results page layout after enabling, this feature
* can be buggy.
**/
define('ASP_MULTISITE_IMAGE_FIX', true);There is a very slim chance this will work at all or properly, but it is worth a try.