After a WordPress 4.0 upgrade the site no longer works

Are you using any sort of caching plugin, or do you see a “Clear/Purge Cache” button in your Dashboard or admin bar? If so, would you please try clearing the cache?

If that doesn’t work, try deactivating all plugins. If that resolves the issue, reactivate each one individually until you find the cause.

If that does not resolve the issue, try switching to the Twenty Fourteen theme to rule-out a theme-specific issue (theme functions can interfere like plugins).

You’re welcome!

You can post at http://wordpress.org/support/plugin/sociable for help with the plugin, but please do note that it’s listed as only “Compatible up to: 3.3.2.”