I have a couple of SMF 2.0.14/15 forums that just kind of go along , nothing super substantial.
My spam protection consist of 10 pretty difficult questions, 3 of which must be answered, along with :
1. httpBL 2.5.1
5. Stop Spammer 2.3.9
12. Misc Anti Spam 1.0
But recently i am running into issues updating from .14 to .15 because of Stop Spammer.
I uninstalled Stop Spammer on one site and it updated to .15 no issue.
Now i run into errors reinstalling Stop Spammer there ( i am working with someone in that MOD thread to get it figuired out.)
But that brings me to this..are there better or more current/supported mods for preventing Spammers/registering?
Spam - my forum is flooded with spam, what can I do (https://wiki.simplemachines.org/smf/Spam_-_my_forum_is_flooded_with_spam%2C_what_can_I_do)
also, there are very clear instructions... given about 6 times, in the StopSPammer support thread