Board Thread:Support Requests - Getting Technical/@comment-5068292-20141121231510

For some reason a SVG I created on the symptoms of Hodgkin lymphoma for my Wiki which I uploaded here  is riddled with black spots whenever it is rendered as PNGs for thumbnails even though the original had none of these black spots (whenever I create PNGs using Inkscape from the said SVG I get have no such problem with blackspots). Any ideas of how I can overcome this? 