Woohoo! after almost 5 years, James Clark has released a new version of Jing and Trang. They are available at: http://code.google.com/p/jing-trang/.
I've run into a few issues with trang and XSD in the past. Hopefully this addresses some of those issues? Will run a few tests and post my results...
UPDATE:Sigh. Trang still won't convert XSD to RNG. XSD continues to be the biggest thorn in my side. Long live RelaxNG!
UPDATE 2:Good news! This feature is on the "someday" list: http://code.google.com/p/jing-trang/issues/detail?id=4
