I installed Yosemite on a second partition - more on this later.
Thus I had to reinstall imagemagick. Here are my install instructions.Your install may be different. I installed it like this:
1) I first install x11. Get x11 from here as recommended by apple and install.
2) Make sure you have Xcode installed and the command tools for Xcode also installed
if you dont
and follow the install instructions if appropriate
3) Next get homebrew by doing this:
ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go/install)"
tested it with these terminal commands
Next I install using homebrew
brew install imagemagick --with-x11
4) I had my imagemagick install folder from before so I just used the same version (ImageMagick-6.8.7-1), already tarred. I reinstalled imagemagick with the commands below:
sudo make install
and it "magickally" worked.