Breadboard part not exported as SVG, works as PNG

If I export a sketch with my breadboard part as a PNG my custom design shows up perfectly, but if I export it as SVG the image is not visible. My custom board is an SVG, designed with Inkscape.

See http://www.cuhka.com/static/doorsensor_bb.svg and http://www.cuhka.com/static/doorsensor_bb.png

I’m having the same issue. Just posted a similar topic. Hopefully, we’ll get an answer.