I think I just solved this problem. I've been fighting with it for 3 days.
I have run the compatibility troubleshooter and it has recommended Windows 8.1 compatibility.
I now have it running.
It did change some settings in my active profile which it adopted from my 4.1 config. It changed line width and speeds.
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aurock 2
I just posted a thread for a similar issue I'm having, take a look and see if yours might be the same thing:
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