[Forum] human verification stopped working after uprage to 4.1.5

[fun-masti]

I upgraded my forum today, and as soon as I upgraded the site became open to all the spammers. I checked the registration by registering a test user and found that Human verification wasn't showing up, which was otherwise working fine before upgrade. [The sudden outburst of spammers proves the fact as such].
I tried to check all options including Image verifications, Q&A, and reCaptcha but none seems to appear at all. What could have been the possible cause and how to get it back.

[Steve Machol]

Check this:

Admin CP -> Settings -> Options -> Human Verification Options -> Registration (checked)

And finally, make sure that the Unregistered usergroup has this set:

Admin CP -> Usergroups -> Usergroup Manager -> Edit Usergroup (Unregistered) -> Require Human Verification on Configured Actions -> Yes

[fun-masti]

Thanks, the last part was missing, i.e. in the Usergroup manager. The captcha is showing up now.