Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
Your SVG image requires gradients and we're still working on gradient support within ImageMagick. We have a patch but have no integrated it into the main distribution just yet. In the mean-time try the rsvg program to render your SVG image.