I had a problem with SSRS 2008 R2 reports where tablix headers were not repeating on PDF and Word exports...they would only show on the first page.
So I followed the nice directions on this post:
stackoverflow solution to tablix header not repeating on all pages
So now it works, but only on PDF reports. My tablix header rows only repeat for PDF, and not for WORD export. I followed directions to the letter. Anyone have any ideas ?