It says : Latest definition file: SE1R16 28.10.2004
Please Note Version SE Build 1.05 is now available! This download is for use with this version only.
Manual Installation: Unzip the archive, replace the existing file and restart Ad-Aware\Ad-Watch.
You can also use the webupdate component implemented in Ad-Aware to install this update.
You can download the zip file and install it manually.
I had the same problem, I had to manually configure the http port, once done it downloaded straight away. I'm using adaware 6 pro.