I fixed it after following the advice in this thread, in short the dependencies are missing in Windows 10:
https://support.microsoft.com/en-us/help/146219/how-to-register-an-activex-control-ocx-manually
Finding the dependencies may not be trivial.
I've been playing WS1 for a while, won a title, did ok, but have never given an interview. I'm guessing that it must have to do with some kind of stat, but I don't know which.