Those using the Sky6 Pro may not be aware that a recent upgrade has just been made available (6.0.0.65) that allows you to load updates of the minorplanet database beyond 500,000 objects. Seems like the previous update would freeze when it got to 499,000.
http://www.bisque.com/sc/media/p/28096.aspx
The current minor planet database can be downloaded from the site below.
http://www.minorplanetcenter.org/iau/MPCORB.html
Also appears that the next major release of the Sky software - SkyX Professional is hoped to be officially released on April 17th at NEAF (USA).
PeterM.