As per this comment

http://mods.curse.com/addons/wow/auctionator?comment=5950

I am using the latest Auctionator and items with a colon ":" symbol don't work on the "Sell" and "more..." tabs. They are selected but return no results from the auction house. Try any pattern to reproduce.

Example would be

Tome of Illusions: Outland

If you type that in search it will return no results but if you just search Tome of Illusions you get results.