From owner-freebsd-ports@freebsd.org  Sun Mar 12 13:52:54 2017
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To: freebsd-ports@freebsd.org
References: <20170312124257.GA63343@doctor.nl2k.ab.ca>
Subject: Re: Firefox port issue
From: Walter Schwarzenfeld <w.schwarzenfeld@utanet.at>
Message-ID: <02bd025b-eb56-9355-b407-31966644657f@utanet.at>
Date: Sun, 12 Mar 2017 14:52:44 +0100
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Your problem with Firefox and &Thunderbird seems a python problem. Try 
to reinstall
py-setuptools and py-pip.