When you have previously installed a software with ports, when you want to install the same software with ports again, there may be errors similar to the following. this means that you can uninstall the agent through make deinstall and re-install the agent through make reinstall. If you are sure you want to * overwrite * The installation can be achieved by setting the force_pkg_register variable. ==> an older version of ports folder is already installed (Software Version) You may wish to ''make deinstall'' and install this port again By ''make reinstall'' to upgrade it properly. If you really wish to overwrite the old port of PortsFolder location Without deleting it first, set the variable "force_pkg_register" In your environment or the "make install" command line.Solution: Add force_pkg_register = "yes" to make install to force installation. That is:/usr/ports/folder address/# make install force_pkg_register = "yes"