Handle X3D 4.0 fields without throwing exceptions

Need to handle X3D 4.0 fields without throwing exceptions, some additions to legacy nodes are missing. For example,

C:\x3d-code\www.web3d.org\x3d\content\examples\Basic/X3dSpecifications//InlineExport.x3d processing with Xj3D for .x3db binary compression InputSource: class org.ietf.uri.URL: c:\x3d-code\www.web3d.org\x3d\content\examples\Basic\X3dSpecifications\InlineExport.x3d InputSource: extractBaseUrl(): file:///c:/x3d-code/www.web3d.org/x3d/content/examples/Basic/X3dSpecifications/InlineExport.x3d

Fatal Error: File format error encountered in filter: Exporter

Unknown field name 'transparency' for node 'Background' (line -1 column -1)