Just upgraded from 7.6.0 to https://wordsmith.org/board/

Followed the procedure in the upgrade docs. Upgrade completed without any errors.

In Control Panel, I don't see any new features such as: Support for Google reCAPTCHA. In fact, the registration screen now shows a broken image in place of a captcha image that used to work earlier (paths to Convert and Mogrify work, as earlier).

What am I doing wrong?