There should be an update on the next few days to fix the wp 3.9 issues. Do you mind if we take a look at your website? I’ll forward this to Kriesi. Please wait for his response.
UPDATE: All avia themes has been update and the newest versions has been release a few days earlier including Flashlight. This should fix the WP 3.9 issues. Please try to deactivate all plugins, see if the shortcode wand works.