I apologize for being thick...I searched the thread and Google (incl KOReader Wiki) and while I got the program installed fine, I can't figure out how to get the dictionary work.
I copied the files in /koreader/data/dict as per wiki and posts here, but when I try to select a word i get it highlighted and no option to do a search.
Is the functionality different from the Nickel reader?
Sort of "Off-topic": I was lead to believe that CoolReader now has dictionary support too (saw some posts from December...) but it might just be my wishful thinking.