Applications disappear

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http://forums.fedoraforum.org – Hi, I just installed two programs, Google Chrome and Texworks. Both of them worked fine, but for one execution. They both just disappear from the gnome menu and trying to launch them from the terminal give me a command not found... I'm using Fedora 17 64bits. Now that I'm trying to install those two applications, chrome fail with a unknown error and Texworks tells me : Code: Error: Package: 1:texlive-pdftex-bin-2012-svn27321.1.20120824_r27513.fc16.x86_64 (@texlive)           Requires: libpoppler.so.18()(64bit)           Removing: pop (HowTos)