Bill,

may be this can give additional help. Since some weeks I have installed
Guide9 in a new folder. If I use the feature Add MPC comets/asteroids I
get always the following results:

download comet data - ok
download critical list objects - ok
download distant objects - Guide9 crashes
download unusual objects - Guide9 crashes

Operating system is W7-64bit.

Regards
Gerhard
www.dangl.at