I've had a similar problem since May 2017, when I was running v.9 - and still am. Both my desktop and laptop are stuck on 9. Each was a separate download from Adobe, same result, and they both operate well except for bugs not yet fixed (Map flashes, etc.)
Seems to me it's a CC problem, so I've deleted and reinstalled CC pgm twice, no changes. It says I'm up to date so it won't try to get the latest (.12).
I've checked the shortcut target, which as seen in File Explorer is a file that has a creation date of 7 Jan 2017. Doesn't seem to be the latest, v.12 - I suppose. I've launched from clicking directly on the .exe file, same results so the problem isn't the shortcut.
I don't know any other way to find out the version date of the folder's file and check against the LR Help/System Info date (v.9). But I repeat - this is more likely a CC problem. BTW, it crashes about once a week, and when I reinstall I get the same old result.
Looks like I have to start classes this week with an apology about how the lease program can be unreliable, even when you've been a paying customer for 2 years? Isn't Adobe embarrasable about performance like this? Others have been enduring this for months, as I have. Any directions would be appreciated. DKD