When I edit a camel image from OpenClipArt.org, and save it with Inkscape, the resulting SVG becomes corrupt.

Bad Camel
http://www.openclipart.org/detail/7474/camel-silhouette-by-johnny_automatic

I'm not sure whether this image is corrupt or whether Inkscape has trouble parsing it. However, I do know that the camel from Clker.com edits perfectly well in Inkscape.

Good Camel
http://www.clker.com/clipart-11776.html

Cheers,

Andrew Pennebaker
www.yellosoft.us