Incompatibility with 64-Bit Windows

Is anyone else having issues launching WOW (The War Within) due to incompatibly with 64-bit versions of Windows? Starting a couple days ago, I’ve been unable to launch WOW. Every time I try to launch a note comes up that says "??\E:\World of Warcraft_retail_\Wow.exe cannot start due to incompatibility with 64-bit versions of Windows. I’ve contacted support, but they said it’s a windows issue. Any advice or way to fix this issue? Thanks

might have better luck posting this in the TWW general discussion forums