I'm are trying to get the "Tax and Invoicing"(civicontribute) te work. I used these.
It works fine when I select one or more contributions and use the action pull down. But opening the details of an specific contribution doesn't show the Print Invoice of E-mail invoice button, as shown in CiviCRM Userguide:
I use Civicrm 4.6.22 and 4.7.11 and php 5.6.