Hi!
I’m running a WPMU blog in a subdir, "domain.tld/wpmuinstall"
Both mentioned plugins doesn’t work in such an environment. The reason for this is the variables $global_site_tags_base and $global_site_search_base which refers both to post SLUG/"post name" _and_ subdir.
I’ve fixed it quick & dirty in global site search by editing line 189 like this:
if ( $post->post_name == "site-search" ) {
But global site tags is referring to $global_site_tags_base everywhere, and I’m guessing there would be more than me having this problem. It should get fixed centrally.