Doesn't work on windows 7?

[ScarletKuro]

I get an exception in the debuger
Retrieving the COM class factory for component with CLSID {228826AF-02E1-4226-A9E0-99A855E455A6} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).

Exception happens in this part of code

try {
 using(var shellBroker = ComPtr < IImmersiveShellBroker > .Create(ComTypes.ImmersiveShellBrokerType)) {
  _inputHostManagerBroker = new ComPtr < IInputHostManagerBroker > (shellBroker.Instance.GetInputHostManagerBroker());
  ret = _inputHostManagerBroker != null;
 }
} catch (Exception e) {

}

UPD: Oh, it's using TabTip.exe not the osk.exe(which is present in windows 7 as well). The readme is totally misleading then, this is not On Screen Keyboard but Touch Keyboard and Handwriting Panel.