Library not loaded: /usr/local/lib/libpq.5.4.dylib

Question

I am working on a rails app.
Installed Postgresql using postgresql-9.1.2-1-osx.dmg
Installed pg gem.
Then when I executed rake db:create getting the

Answer 1

if you have upgraded PostgreSQL with homebrew (brew update && brew upgrade), then simply uninstall the pg gem:

gem uninstall pg
bundle install

and the path will be corrected for you. No need to uninstall the whole PostgreSQL cluster.