Your comments

Thanks. Googled it and I'm guessing it has to do with the CryptoPrevent group policies I installed a few months ago. Installed 7TT to a different directory and it's fine now.
Yes, the exe can't launch. It's set to run at startup in the Settings, but when the system starts it doesn't, and there is no error or message on startup.

So I tried manually launching the exe and I get the error, "Your system administrator has blocked this program. For more information, contact your system administrator." I'm already logged into an admin account.

The only way to launch the program is to right-click and select 'Run as administrator', as mentioned in the above post.
I added it manually, seeing as it was having trouble remembering the width on startup. I've since stopped using the portable version since the latest Windows 8.1 update which broke it.

Now experiencing a different problem where the beta version won't run at all without admin privileges (so it can't auto run on startup), but I think I'll submit another post about it.
Looks like I spoke too soon. Now it no longer remembers the position at all after restart using Windows 8.1. I have the registry entry set up, but I'm guessing it has to do with initially installing it portably initially before selecting 'Run at Startup' in the settings.

I probably could re-install it non-portably, but thought I'd update you on my experience with the issue.
Thanks for the reply, I think it might have been a combination of originally running it in portable mode and having it not being immediately open on startup (before it had time to switch, so I manually adjusted it).

Seems to be running fine now, feel free to close :)