IUP 2.3 and Lua 5.0.2

["R. Frazier" <rtdoger@...>]

IUP 2.3 and Lua 5.0.2

I'm trying to create a scripted dialog box with IUP 2.3 and Lua 5.0.2,
yet the script fails.  Does IUP 2.3 work with Lua 5.0.2 or is it broken?
If not, then what is wrong with this test example?

I'm using pre-compiled libs from IUP 2.3 and CD 4.3:
iup2_3_vc6.tar.gz
cd4_3_vc6.tar.gz

script error:
test.lua:1: attempt to call global `IupButton' (a nil value)
stack traceback:
	test.lua:1: in main chunk

script:
ok_button = IupButton { title = "Ok", bgcolor = WHITE }
cancel_button = IupButton { title = "Cancel", bgcolor = WHITE }
dialog = IupDialog { ok_button, cancel_button; title = "Confirmation", }
dialog:display()

code:
extern "C" {
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"
}

#include "iup.h"
#include "iuplua.h"
#include "iupcontrols.h"
#include "luacontrols.h"

void
main() {

IupOpen();
IupControlsOpen();

lua_State *L = lua_open();

luaopen_base(L);
luaopen_io(L);
luaopen_string(L);
luaopen_math(L);
luaopen_table(L);
luaopen_debug(L);

iuplua_open(L);
controlslua_open(L);

iuplua_dofile( L, "test.lua" );
IupMainLoop();

IupClose();
IupControlsClose();

lua_close(L);
L = NULL;
}

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