Setup error gtk

[Jack Mitchell <jack@home9999.plus.com>]

I have just installed gnat & gtk in XP PRO

when I compile the gtk examples such as scribble from 
"C:\GtkAda\share\examples\gtkada\gtk_examples", and run the resulting 
executable.
It opens a DOS window, then puts up a windows dialogue box titled 
scribble.exe - Entry Point Not Found
containing :-
The Procedure entry point g_assertion_message count not be located in 
the dynamic link library libblig-2.0-0.dll.

Using the debugger resulted in :-
file c:/gtkada/share/examples/gtkada/gtk_examples/scribble.exe
(gdb) start
Breakpoint 1 at 0x40185b: file 
C:\GtkAda\share\examples\gtkada\gtk_examples\scribble.adb, line 21.
gdb: unknown target exception 0xc0000139 at 0x7c96478e

Program received signal ?, Unknown signal.

Program exited with code 030000000471.
You can't do that without a process to debug.
(gdb)


Obviously I have got the installation wrong somewhere.
I have added :-
with "..\..\..\..\lib\gnat\gtkada";
to the front of the gpr file, as instructed by the gtk installation 
manual, but changed nothing else
Can someone help please ?


-- 
Jack Mi_Remove_tchell