Hi David,

just a question. Do you have this file http://www.projectpluto.com/ucac4.tdf in your MAIN Guide folder ?
If not copy the text in notepad, save it as .tdf (not .txt) file and put the file in your main Guide folder (not with the UCAC catalogue).

I didn't have it, ... and now UCAC 4 works for me !.

(For UCAC 3 the file is here:

The idea stems from a German forum: http://www.astrotreff.de/topic.asp?TOPIC_ID=200113&whichpage=1#754081

Good luck !