Hello, I had the same issue and could solve it the following way. open a terminal, cd /usr/lib sudo mv libpq.5.dylib libpq.5.dylib-ORG sudo ln -s libpq.5.3.dylib libpq.5.dylib Cheers, Stéphane -- View this message in context: http://postgresql.1045698.n5.nabble.com/installation-problems-on-OSX-Lion-tp4627419p4969019.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general