Problems with SVG parsing

 Hello, i installed isaviz on debian testing all seems good, but when i try to import or copy and paste a simple RDF-XML file i have always the same
  error, here is mi error log
  -----Importing RDF-----
  XMLManager.parse(/tmp/isv17867.svg): org.xml.sax.SAXParseException: Invalid byte 2 of 3-byte UTF-8 sequence.
  RDFLoader.load() java.lang.NullPointerException
  Please verify your directory preferences (GraphViz/DOT might not be configured properly), your default namespace and anonymous node prefix declarations
  i've change my locale to es_MX.UTF-8 UTF-8, and i have the same problem.
 

		
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