Lightroom Classic CC "Sorry, something went wrong" on startup
I had a Windows 10 Pro 64-bit reinstall after SDD failure, so had to re-install all applications. LR now starts, then shows a blank window (so no idea what is happening) with a spinning icon, then after a few minutes throws a "Sorry, Something went wrong" error and after I click [Dismiss] LR shuts down. This occurs every time.

I have uninstalled through the CC Panel and re-installed: no change --- I get a choice of catalog, but even if I select the new empty catalog rather than my main 3Gb catalog, same problem occurs.
In spite of sending Adobe the error logs several times over the last week, I've received zero response.
I've not located a similar problem documented with a solution in the support community pages.
My CC account is up-to-date so it's not an account problem.
Photoshop CC throws the same problem.
Thanks for assistance.
