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Subject: pkg error
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I tried to install a package that ended up uninstalling xfce and all packages 
using gtk3 and/or webkit. I just hit the 'y' to fast so that was my error.

To correct this I deleted the package and then did an autoremove so the xfce 
install would bring back any updates. So was my thinking anyway. gtk3 and webkit 
came back as:

    gtk-xfce-engine-3.2.0
    gtk2-2.24.29_2
    gtk3-3.18.8_3
    webkit2-gtk3-2.8.5_3

Installing firefox got firefox-47.0_1,1. Runing firefox or any package with a 
gtk3 dependency gets

  /usr/local/lib/libgtk-3.so.0: Undefined symbol "g_param_spec_get_name_quark"

libgtk-3.so.0 is a symlink to libgtk-3.so.0.1800.8. A diff shows this module 
is identical to one on another system that works. On that system we

    gtk-xfce-engine-3.2.0
    gtk2-2.24.29_2
    gtk3-3.18.8_3
    webkit2-gtk3-2.8.5_2

lastly the symbol g_param_spec_get_name_quark is in the module and using 
libgtk-3.so.0.1800.8 from the working system makes no difference.

I do not know how to procede.

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