On Sat, 29 Mar 2014, Alessandro Astuti wrote:
 I had this:
   ldd /usr/bin/gretl_x11 | grep gtk
        libgtksourceview-2.0.so.0 => /usr/lib/libgtksourceview-2.0.so.0
   (0x0000003f6d000000)
        libgtk-x11-2.0.so.0 =>
   /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x0000003f6d400000) 
Hmm, I wonder why those libraries are in different directories?
Anyway, did you build gretl yourself? I wonder if something went wrong 
with "make install", in particular the sub-target "make install-lang"
in the gui2 directory: that installs the gretl.lang file that is needed 
for gretl's syntax highlighting.
Allin Cottrell