Unfortunately the tool doesn't work out of the box on Windows 7 64-bit SP1 :(
I tried only V0.70 and V0.66 and they can't get proper control information from a WPF Application - they are querying the desktop window instead.
I guess, it is caused by the UAC, which elevates the spy (what for?), and the target application isn't elevated.
V0.51 works better - it can see the control (a button) in a WPF application, but crashes when pressing CTRL+R.
Here its log:
>"F:\Programs\autoit-v3\SciTe\..\autoit3.exe" /ErrorStdOut "E:\KA\...\UIA_V0_51\simplespy.au3"
//TODO codetemplates.txt not available An error occurred when reading the file. & @CRLF"E:\KA\...\UIA_V0_51\simplespy.au3" (229) : ==> Subscript used on non-accessible variable.:
$tLine=$UIA_CodeArray[$i]
$tLine=$UIA_CodeArray^ ERROR
>Exit code: 1 Time: 10.01