There is nothing wrong with the preset, but the medusa images in that directory are completely blank. Something must have gone wrong while rendering those at 50x50. I will check it out later tonight.
[Edit] Strange, there must be something wrong with the SVG. When I render it with fen2.php it produces an entirely transparent PNG. The SVG exists, but when I render it directly in the browser it renders it much larger than the other SVG. Nevertheless the medusa 50x50 PNG images were on my own PC, so I must have been able to render them. Perhaps directly from my winboard.nl website.
Anyway, I uploaded these images from my PC to the alfaeriePNG directory now. That should fix the problem. (After flushing the cache; I hope the CloudFlare cache won't play you tricks; I still get the blank image if I don't append ?nocache=true to the URL.)
There is nothing wrong with the preset, but the medusa images in that directory are completely blank. Something must have gone wrong while rendering those at 50x50. I will check it out later tonight.
[Edit] Strange, there must be something wrong with the SVG. When I render it with fen2.php it produces an entirely transparent PNG. The SVG exists, but when I render it directly in the browser it renders it much larger than the other SVG. Nevertheless the medusa 50x50 PNG images were on my own PC, so I must have been able to render them. Perhaps directly from my winboard.nl website.
Anyway, I uploaded these images from my PC to the alfaeriePNG directory now. That should fix the problem. (After flushing the cache; I hope the CloudFlare cache won't play you tricks; I still get the blank image if I don't append ?nocache=true to the URL.)