For those of you using Fedora TeXLive 2012, which has been recently updated to the final revision: http://www.linux.cz/pipermail/texlive/2012-June/000505.html
Since this last revision, instant preview did not work any longer. I guess the reason is that there is no longer a texlive-preview package available, which provides the style preview.sty. AFAIK, this style file is needed to enable instant preview. I just wanted someone to confirm that this is indeed the case, and if there is another alternative, apart from waiting for the preview package to come back to the fedora texlive repository. Thanks. -- Rudi Gaelzer Department of Physics Institute of Physics and Mathematics Federal University of Pelotas BRAZIL Registered linux user # 153741