Using IupMglPlot in OpenGL mode prints error "MathGL message - AddLight: light: ID is out of range" when graph updated

mglplot_opengl.c

#include "stdafx.h"

#include "iup.h"
#include "iup_mglplot.h"

double plug_current_graph_y[100];
Ihandle * plot;

void update_gui_callback()
{
	//every update event (like this redraw call, or mouse over) causes the error message to be printed
	IupMglPlotSet1D(plot, 0, NULL, plug_current_graph_y, 100);
	IupSetAttribute(plot, "REDRAW", NULL);
}

int main(int argc, char **argv)
{
	IupOpen(&argc, &argv);
	IupMglPlotOpen();
	IupSetGlobal("MGLFONTS", "../etc/mglfonts");

	//create MglPlot in OpenGL mode
	plot = IupMglPlot();
	int dataset_number = IupMglPlotNewDataSet(plot, 1);
	IupSetAttribute(plot, "RASTERSIZE", "600x600");
	IupSetAttribute(plot, "OPENGL", "YES");			//<--------In OpenGL mode only, when graph is updated, will always print "MathGL message - AddLight: light: ID is out of range"

	IupShowXY(IupDialog(plot), IUP_CENTER, IUP_CENTER);

	//Setup a timer to periodically update the graph
	Ihandle * timer1 = IupTimer();
	IupSetAttribute(timer1, "TIME", "200");
	IupSetAttribute(timer1, "RUN", "YES");
	IupSetCallback(timer1, "ACTION_CB", (Icallback)update_gui_callback);

	IupMainLoop();

	IupClose();

	return 0;
}