xsltc ArrayIndexOutOfBoundsException, BUG ?

Hi,

I am using XSLTC, the Summer02 release

I am having problems transforming a particular xml doc, which works just
fine with xmlSpy

ERROR:
javax.xml.transform.TransformerException:
java.lang.ArrayIndexOutOfBoundsException
        at
org.apache.xalan.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:5
59)
        at
org.apache.xalan.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:1
79)

Is this a known bug?

Thanks

John