did you do something with the JS ?
becose sudenly i get this message from the revolution slider
Revolution Slider Error: You have some jquery.js library include that comes after the revolution files js include.
This includes make eliminates the revolution slider libraries, and make it not work.
To fix it you can:
1. In the Slider Settings -> Troubleshooting set option: Put JS Includes To Body option to true.
2. Find the double jquery.js include and remove it.