[www-svg] <none>

I am attempting to load an SVG graphic from file for display in a  
Graphics2D (interface from Jasper Reports).

I have tried various code snippets, such as:

         try
         {
             UserAgent userAgent = new UserAgentAdapter();
             DocumentLoader loader = new DocumentLoader(userAgent);
             BridgeContext ctx = new BridgeContext(userAgent, loader);
             ctx.setDynamic(true);
             SVGDocument svgDoc = (SVGDocument) loader.loadDocument 
(_url);
             GVTBuilder builder = new GVTBuilder();
             GraphicsNode graphicsNode = builder.build(ctx, svgDoc);
             graphicsNode.paint(graphics);
         }
         catch (IOException e) {
             e.printStackTrace();
         }

but always get a stack trace that ends...

         at org.apache.batik.css.engine.CSSEngine.parseStyleSheet 
(Unknown Source)
         at  
org.apache.batik.dom.svg.SVGDOMImplementation.createCSSEngine(Unknown  
Source)
         at  
org.apache.batik.dom.ExtensibleDOMImplementation.createCSSEngine 
(Unknown Source)

with an error:
org.w3c.dom.DOMException: file:/Volumes/Mirror/InraxUploads/8206/10297:
Invalid CSS document.

The SVG file loads fine into Squiggle.

Thank you for any help.
John