xmlsec on 64bit linux machine

Hello!

Has anyone used xmlsec on 64bit platform. I am trying to use it on SUSE 
64bit Linux.
The problem is that xmlSecAssert reports error 
(func=xmlSecDSigCtxProcessSignatureNode, file=xmldsig.c, line=463, 
obj=(null), subj=dsigCtx->signValueNode == NULL, error=(100) assertion), 
but I checked that dsigCtx->signValueNode is NULL prior calling 
function. xmlSecDSigCtxSign.
the sam code works fine on Windows 32bit.

Best regards,
Igor Odar