In few instances reported so far, the Thumbs Rating values have become invalid, showing million or billion high ratings. So far, we were unable to find the cause of the problem, but it was caused by something in the early 3.x versions of the plugin. To fix this issue, you need to recalculate the Thumbs Rating, and the ratings will be fixed.
To do that, open the Rating System plugin admin menu, go to Tools and open Recalculate Data tool. Make sure to read all the provided information there. Find the Thumbs Rating box, and enable recalculation for it. Click the Recalculate button, and wait for the process to run, you will see the progress information. Once it is done, check the posts that had invalid ratings to confirm that the problem has been solved.
Also, it is recommended to update plugin to the latest available version before doing this.
This can happen if you are using GD Rating System Pro additional addons (like Multi Ratings or User Reviews addon). If that happens, make sure to disable GD Rating System Pro and all addons for it, and upgrade main plugin and all its addons, and reactivate them after the upgrade is done.
All Dev4Press plugins and addons require jQuery. But, they will work only if the jQuery is loaded with the WordPress proper Enqueue method. If you are replacing jQuery that comes with WordPress with some other version loaded from other location, my plugins will not function properly, and that goes the same for most of the other WordPress plugins that depend on the proper way for loading jQuery.
Errors like this point to the problem with the plugin installation process when additional database tables need to be created. If that has not happened, it points to the problem with database access or something else related to the database server, but it is might be simply WordPress related issues preventing the normal update.
To check this out, open bbPress Toolbox menu -> Tools -> Recheck and Update. This panel will recheck and recreate tables in possible. If not, you will see the error messages. If that happens, you need to create tables manually (via phpMyAdmin, for instance). Here is the SQL schema for all 3 database tables plugin needs: Database Schema.
This is always the issue with the page cache. The plugin supports the use of cache plugins, but in that case, it needs to get current ratings through AJAX to avoid showing old cached page. The plugin includes Dynamic Load addon that will load rating blocks through AJAX. This addon is disabled by default, and if you use cache plugins, just enable this addon from plugin Settings -> Extensions panel.
When you install User Reviews addon for the first time, it may happen that new templates are not properly picked by GD Rating System Pro. To remedy that, simply open GD Rating System -> Tools -> Recheck and Update panel. You will see the update messages, and that will reload all available templates, and reviews should be OK now.