portmgrThe ports tree has been modified to only support pkg(8) as package management system for all supported version of FreeBSD.

if you were still using pkg_install (pkg_* tools) you will have to upgrade your system.

The simplest way is

cd /usr/ports/ports-mgmt/pkg
make install

then run

pkg2ng

For full instructions,  head on over to the following link: http://blogs.freebsdish.org/portmgr/2014/09/01/pkg8-is-now-the-only-package-management-tool/