[GreyWyvern]

That’s where it is. A few lines of context code included:

...

				<label for="signup_password_confirm"><?php _e( 'Confirm Password', 'buddypress' ); ?> <?php _e( '(required)', 'buddypress' ); ?></label>
				<?php do_action( 'bp_signup_password_confirm_errors' ); ?>
				<input type="password" name="signup_password_confirm" id="signup_password_confirm" value="" class="password-entry-confirm" <?php bp_form_field_attributes( 'password' ); ?>/>

				<?php do_action( 'bp_account_details_fields' ); ?>

<!-- Test question -->
<label for="signup_test">Challenge question? <?php _e( '(required)', 'buddypress' ); ?></label>
<?php do_action( 'bp_signup_test_errors' ); ?>
<input type="text" name="signup_test" id="signup_test" value="" />

			</div><!-- #basic-details-section -->

			<?php do_action( 'bp_after_account_details_fields' ); ?>

...

From your responses I’m getting the feeling that what I’m doing should be working, but it isn’t. I’m probably overlooking something simple. 😐

[GreyWyvern]

I activated the twentythirteen theme and uploaded the edited register.php file here:

/wp-content/themes/twentythirteen/buddypress/members/register.php

I double checked to make sure that the register.php file I uploaded was from:

\wp-content\plugins\buddypress\bp-templates\bp-legacy\buddypress\members\register.php

… and also that my challenge question code was included. It’s inserted at line 51 of the file as follows:

<!-- Test question -->
<label for="signup_test">Challenge question? <?php _e( '(required)', 'buddypress' ); ?></label>
<?php do_action( 'bp_signup_test_errors' ); ?>
<input type="text" name="signup_test" id="signup_test" value="" />

After clearing any caching plugins, the challenge question DID NOT appear on the signup form while the twentythirteen theme was active. I have reverted back to the blackfyre template for now.

Any thoughts?

[GreyWyvern]

Thank you for the reply. Just so you know, I am an experienced PHP coder, but I’m quite unfamiliar with the WP and Buddypress plugin API, which is why I was adding the challenge question manually right in the PHP files before. So I’m not sure where I would put the bp_signup_validate code you linked. Some specific file?

I copied my edited register.php (with the challenge question) to the following folder of the theme we’re using:

/wp-content/themes/blackfyre/buddypress/members/

There was no file named register.php in this directory previously.

After clearing any caching plugins, the signup form still only displays the default questions. You can see it here: http://realmsunchained.com/user-registration/

There should be an additional field under the “Confirm Password” field. Before Buddypress 2.4.x just editing the files I mentioned in the OP caused instant changes to this page. Now the registration form seems to be drawing its code from somewhere completely different.

Am I going wrong somewhere?