adding tag base to breadcrumbs

Breadcrumb NavXT 5.1.1 is 2 years old now, I do not recommend using it. Also, if you are using it because you are still on PHP5.2, you need to contact your webhost and insist they upgrade to PHP5.6.

Since tags do not really have their own ‘base’ per what WordPress supports natively, you’ll need to add in the breadcrumb for it manually. To do this, see the Breadcrumb NavXT documentation for the bcn_after_fill action. There are examples of how to use it to inject breadcrumbs into the trail.