After updated Revolution Slider, if your slider cannot edit/update, please do follow to fix:
1. Download file filter-cupid.zip on attachment by click here or http://support.g5plus.net/wp-content/uploads/2015/09/filter-cupid.zip
2. Extract and replace file filter.php to path: cupid\lib
If you have any troubles configuring your website applications with the above settings you can contact the Support Center by signing up and submit a new topic. G5Theme Support Team will be glad to assist you.
Thank you very much for choosing G5Theme!