Renaming the configuration folder will cause you to uninstall then reinstall your extensions. With the error you are getting the problem might be one with the installation files. Renaming the configuration folder and re-installing the extension might clear up the problem. These are the first steps that we take when dealing with errors like the ones you are getting. If the issue persists for you after trying this then I can open a ticket for you so the problem can be looked into further.