[magick-users] Install Problems

[duc.sequere.aut.de.via.decede at imagemagick.org]

> To verify the path variables were being applied properly

We updated the installation script to fix this problem.  When you install
ImageMagick under Windows now, the convert command should work without
complaint.  The problem you had was transient and a result of us using
a different tool to set the ImageMagick path environment variable.