For rendering graphical SCCharts you might want to use the KLighD.jar as explained here Command Line Rendering here.
If you like to use the KLighD HTTP server provided, then use

render.sccharts.com:80

or as backup

sccharts.com:4445 

as the host and port in your KLighD.jar call.

Example call:

java -jar KLighD.jar render.sccharts.com -f somescchart.sct -o somescchart.png -s 3 -f png

NEW: You can use -f kgx to output in the KIELER Graph (KGraph) format.