Hello everyone. I have a drupal site that stores a lot of products, so I need a search engine. In the search engine there are four radio buttons to selecting search options. Initially the search engine works perfectly, but when I do a search without labeling any of the four radio buttons and the search results are paginated comes trouble. The first page is displayed without problems, but when I try to access any of the following pages automatically the four radio buttons are labeled and highlighted in red, throwing an error saying: - Detected an illegal option. Please contact the site administrator. I do not know what could be the problem, until recently has been working perfectly, but after a few updates in the the core and modules, the page throw this error. Any ideas?