I outdated FreeBSD 10.1-Stable server needed to be updated for it to install packages again. Problem was, it was deployed from stable, i normally never use stable because it not production ready, its a development branche. But this server was stable and here are the steps to get it to a release train.
1. Update the source tree on the server.
cd /usr/src && rm -rf * && svnlite switch https://svn.freebsd.org/base/releng/10.4 /usr/src/
2. Follow the link below. Only change i did was to “-j 6” when making so that it used multiple cores.
After the merge-ui command you just choose “later” for all the promt with merge of config files.
And volia, The server is updated to FreeBSD 10.4-release. Then you can update with the binary process, freebsd-update upgrade -r 11.2-RELEASE.
In case you need to know more about the stable vs. release, here is a link i found en the FreeBSD forum.