If you go here:
http://www.chess.com/download/view/crafty-234
you will get a ZIP file containing two ZIP folders with the .EXE files, one for 32-bit and one for 64-bit. UnZIP the inside ZIP files and extract the .EXE files to the folder where you want to keep them. Then direct the engine manager to that folder.
I just downloaded Crafty 23.4, but the (Create UCI Engine) is looking for a EXE file or other main file. All I have with Crafty is a large number of C files. Please Help!