A new bug has appeared since upgrading to 2.5. On the articles where the registration links appear I am getting a weird view of all enabled modules appearing (enabled for other sections of the site). This can be fixed with a refresh, but clearly something is buggy. I've attached a screen grab for the buggy version and the no bugs version. The only that should be on the page is the Water Savvy article.
We released 2.5.1 with a few bug fixes. I believe your problem should be resolved by reinstalling the update. The package was updated a few hours ago. Please download the package and reinstall. If you continue to have an issue, log a support ticket. Thanks.