yesterday.. i've installed setool v1.1437 in new laptop win7 x32, and there's no device like that (UC-10 USB Composite device).
and the software runs well, try "identify" xperia z1 compact d5503, ok.
are you already run "ggsetup-3.3.0.0.exe" (installed at:Program Files\Sony Mobile\Gordons Gate).