Problem solved. Need to add bigmemory after ' linking:' in description file. Thanks. Aileen Lin View my profile: au.linkedin.com/in/aileen2 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.r-forge.r-project.org/pipermail/rcpp-devel/attachments/20130402/a996d3f2/attachment.html>