libpng16.so.16 not found

[doug at safeport.com]

My FreeBSD muse suggested I might be a better result from a site I was testing 
by using Chrome. Installing the chromium package begot the not found in the 
subject running firefox. There was a similar problem with chrome itself.

As I run xfce on a 10.0 system, my first attempt was to see if I could fix the 
issue. The following set of pkg commands posed on FreeBSD forum by Anil-G:

    pkg check --shlibs -nva | grep -v done
    pkg version -vRL=|less
    pkg upgrade -n

seemed promising. The first command yields the shared libs that need to be 
upgraded. The version command lists packages that need updated and the upgrade 
command tell you what will be upgraded. Check showed only one library for firefox 
but the upgrade command indicated 100s of thing to be replaced and/or updated 
included Xorg and Xfce. So I tried replacing the one lib. This lead to a series 
of changes eventually breaking midori. At this point I "gave up and ran the 
whole process in single user mode. This took less that 15-20 minutes and worked 
perfectly. 'pkg autoremove' then removed the orphaned packages.

To me this is the 'holy grail' of X-windows on FreeBSD. Would portupgrade or 
postmaster have allowed me to skip updating Xfce and Xorg? If not what 
advantages do they offer at this point?


_____
Douglas Denault
http://www.safeport.com
doug at safeport.com
Voice: 301-217-9220
   Fax: 301-217-9277