I got this (or similar) as well. I'm running XP64 and I noticed that both the demo and the retail do not add shortcuts for launch.
Yesterday, when I went to patch, it reported that GRAW2 wasn't installed, som couldn't patch.
I reintstalled to "F:\Ghost Recon Advanced Warfighter 2" and it patched fine. It was in my "Program Files (x86)" folder before. Obviously you wouldn't have that issue, but it might be an issue with the path you did choose.
I still don't get shortcuts, but it patched now