Hi simple captcha works fine on my app. recently I changed my hosting provider and moved the app to new server. Here its not working and throwing error ActionView::TemplateError (undefined method `find_by_key'' for SimpleCaptchaData():Class) on line #246 of home/register.rhtml: 243: </td> 244: <td align=left> 245: <br/> 246: <%=show_simple_captcha (:object=>"user", :label => "Robot Authentication (Case Insensitive)") %> 247: 248: </td> 249: <td align=left> Not sure why? Can anyone help with it please..........