gedit does not load and when I run it from the terminal, I get the following:

(gedit:27415): Gtk-WARNING **: GTK+ module libgail.so cannot be loaded.
GTK+ 2.x symbols detected. Using GTK+ 2.x and GTK+ 3 in the same process is not supported.

** (gedit:27415): WARNING **: Could not load Gedit repository: Typelib file for namespace 'GtkSource', version '3.0' not found

(gedit:27415): GLib-GIO-ERROR **: Settings schema 'org.gnome.nautilus.preferences' does not contain a key named 'enable-delete'
Trace/breakpoint trap

Kindly advise... thanks