Curve by formula error message "Error # 32768 defining curve " is not displayed in status bar. Only it is visible in message center. Trying to place this curve is confusing as nothing happens and no error is shown.

a=1300+0; b=650+0; c=0+0; d=544.085+0; x=at+0; g=(at)-b+0; h=gg/(bb)+0; y=c+d*sqrt(1-h)+0;