I have two sites both setup seemingly the same. I'm having difficulty with one where clicking on a tag link either in a tag cloud or elsewhere returns "Sorry, no posts matched your criteria." while the other site works as expected.
I can verify that the .htaccess file and permalink settings are the same although the working site has /blog preceding the "Category base" and "Tag base" settings and the other doesn't for some reason.
Could this be the reason somehow? Any ideas how to solve it?