Hi, On Sat, Sep 13, 2008 at 18:23, Joe Tseng <joe_tseng at hotmail.com> wrote: > I've been trying to install perl-Tk and I learned v804.028 uses libpng > > 1.2.20; Are you sure? Where are you installing perl-Tk from? I just tried to yum install perl-Tk version 804.028-2.el5.rf from the rpmforge repository, and it didn't say anything about having to upgrade libpng. I have libpng version 1.2.10-7.1.el5_0.1 installed. This is an updated CentOS 5.2 machine. Can you give more details on where are you getting this perl-Tk from? HTH, Filipe