I'm having issues with jetpack and formidable forms
Other Jetpack users have reported conflicts between Jetpack and Formidable forms, but we haven't been able to solve the conflict yet. We're working on that problem though.
I just found out that the error is with my admin-bar-v2.js
One of your plugins (WP Lightbox) seems to be loading an old version of jQuery instead of using the version that comes bundled with WordPress.
It can create multiple conflicts with WordPress and with other plugins like Jetpack. You can read more about it here:
http://wordpress.org/support/topic/troubleshooting-wordpress-35-master-list?replies=4#post-3547424
You'll want to look for the function loading jQuery in your plugin. Once you find that function, you can remove it and enqueue the proper version of jQuery as explained here:
http://codex.wordpress.org/Function_Reference/wp_enqueue_script
If you do not feel comfortable editing PHP files, you can also contact the theme or plugin author and ask them to solve the issue.