I just purchased this today as well and I am having the same issue. If I uncheck vortice it will install. I tried to go back in and then to try to add vortice to the already installed packages the same thing. I then uninstalled and then re-installed with just try vortice selected same thing. End result, I can only install if vortice is unchecked.
something appears to be broken with this latest release -- 1.2.0.8
I look forward to the resolution.
Thanks,
Joe