You have a forward dependency problem.
The easiest way to fix this is to 1) get a list of your existing packages:
# pkg_info > /path/to/some/place/existing.package.list
2) delete all of your packages at once:
# pkg_delete /var/db/pkg/*
3) confirm you have no remaining older dependent library packages remaining, use pkg_delete /var/db/pkg/.lib* if any are still installed
# ls -a /var/db/pkg
4) review your package list, and install what you need, avoiding the use of version numbers, and ensuring you have $PKG_PATH set correctly.
# less /path/to/some/place/existing.package.list
# echo $PKG_PATH
# pkg_add <package1 package2 package3...>