Didn't notice the 2008 one; but I just downloaded and tried; still no luck, this time I get:
The version of this file is not compatible with the version of Windows you are Running. Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of this program, and then contact the software publisher.
Tried in compatability mode, was a long shot anyway; looks like I need a 64-bit version of APOD.