glPushAttrib, glPopAttrib

glPushAttrib() cannot be called inside a the glBegin() and glEnd() pair.

This is a sample

// Draw the lines
 glPushMatrix();
 glPushAttrib(GL_CURRENT_BIT );  // Push the current attributes bit
 glBegin(GL_LINES);
  glColor3f(.5,.5,.5);   // Grey color
  glVertex3f(-nRange, 0, 0);  // x-axis
  glVertex3f(nRange, 0, 0);
  glVertex3f(0, -nRange, 0);  // y-axis
  glVertex3f(0, nRange, 0);
 glEnd();
 glPopAttrib();
 glPopMatrix();