Crashing xmllint

Hi,

I'm using the windows binary version of libxml and xmllint downloaded 
from http://www.zlatkovic.com/pub/libxml/ . All the 2.6.x versions of 
libxml does
an illegal memory access when running xmllint (or, for example, xsltproc).
The 2.5.x version runs fine. Any ideas? Could there be a DLL missing?

  Thanks,
       Per