osx - Rails Error: ImageMagick/GraphicsMagick is not installed -

i error when ran rails app on osx , tried upload image.

i have "product" model , using mini_magick carrierwave uploading product's image. when create product on ubuntu's laptop, works fine, when on macbook, throws error:

image failed manipulate minimagick, maybe not image? original error: imagemagick/graphicsmagick not installed

i have done "bundle install" command , works fine... know problem?

i thinking may have of foundations on osx. can try removing , start again:

to uninstall

brew uninstall imagemagick graphicsmagick libpng jpeg brew cleanup -s 

to install

brew install graphicsmagick 

hope works