This could happen if your hosting company has a small number for the maximum input fields in forms, or you use a very big number of slides. In either case, only your hosting provider can help you. Please ask the hosting company to increase these settings in the PHP.ini file:

  • max_input_vars
  • suhosin.request.max_vars

Alternatively, you can remove unused slides from the allslider. 

Posted in: Allslider, Common errors