Error: Code from security images is incorrect

You have no securiy images on your join_form,
go to admin
- Advanced Settings
- Enable security image on join page
option checked on this...

That was the problem when I did have security images on join page checked in advanced settings, even if I type the correct letters i got the error Error: Code from security images is incorrect. Therefore, right now it is disabled.

Then I'am not sure about it, error is display when no input is sendt...
maybe check your simg folder and check files and size about everything is uploaded correct...
(Run 6.0.0004 RC on my testsite, no problem here..)

I am having this same exact problem, did you ever find a fix jdoedtman?

i have same that GD enable and in Advance setting there is no any field to disable captacha image . how can we do

I found the answer

log into your admin panel and choose BUILDER
use the page builder and go to join page then drag the captcha into the inactive box. That's it

My host has everything enabled and when I say everything I mean everything and the image still didn't show up. So that is how to do it have fun

Seeker your the man I been beating myself crazy on this one.. Goooood looking. too much back and forth and it could of been said that easy as you put it. Kudos....

I just installed v7beta6 and ran into this same issue. In v7 I had to go to builder->profile fields->join form(which was default selected). Not sure why it wouldn't work but not a big issue for me. Thanks to everyone who previously responded! This helped me alot.