There may be a couple reasons why this occurring:
First, something is loading a different version of jQuery than what is officially supported by WordPress (and thus by SLB). Removing/disabling the code that is loading the different version of jQuery would allow WP to load the correct version.
My recommendation would be to disable all plugins (except for SLB) to see if SLB is once again functional. If so, then re-enable plugins one-by-one until SLB stops working. The plugin you enabled when SLB stopped working is the rogue plugin.
If you've recently updated or changed your theme, it may also be a good idea to switch to WP's default theme while testing in case the theme is causing an issue.
If SLB still isn't working with all other plugins disabled, let me know and provide a link and I would be glad to take a closer look.