How do i stop quicksilver from indexing a folder?

[equalsabracket]

I have a folder with everything from my old computer on it in Andrew/documents/old and i don't want quicksilver to add the files inside that folder to it's index. How do i stop it from doing so?

 

[kedean]

If you open the window and go into the settings window (small icon in the top right of the search dialog), and go to the 'Catalog' tab, you can uncheck any items that you don't want searchable.

 

[equalsabracket]

I tried adding it to the custom list then unticking it but it automatically ticks itself again.