I checked everything that Patrick and Ken said to try and all the settings were correct. Thanks guys! But I still got the error. So I went looking thru the menus and discovered file/reset chart and options. I tried it and it worked! I can now see comets, including 1P/Halley and asteroids.
BUT..when going backwards in time (1986, 3 March), the error returns. I found that I could only go back as far as 2008 before the error comes back. Is this because I need 1986 coordinates for P1/Halley? I don't have this problem with Ver 2.76c. --geoff
