Hi Chris. I did try your workarounds, but unfortunately neither worked. Premiere CC was suppose to fix the issue of exporting while using preview files using Pro Res, but there seems to be a bug when titles or graphics are involved (it works fine if i remove all graphics and titles). I noticed there are a couple of others with the same issue. I wish Adobe would finally wake up and address this issue for Mac users. Its not just some little issue…its exporting our sequence – kind of a big deal.