[Simorq]

Exec(ExpandConstant('{sys}\taskkill.exe'), ' /F /IM pZLib.exe', '', SW_HIDE, ewNoWait, ISDoneCancel);
      Exec(ExpandConstant('{sys}\taskkill.exe'), ' /F /IM Precomp.exe', '', SW_HIDE, ewWaitUntilTerminated, ISDoneCancel);
      Exec(ExpandConstant('{sys}\taskkill.exe'), ' /F /IM Precomp64.exe', '', SW_HIDE, ewWaitUntilTerminated, ISDoneCancel);
      DelTree(ExpandConstant('{app}\'), True, True, True);