Cannot log in. Error: Warning: require_once() [Fatal error: require_once() [func

In attempting to get the plugin Mashsharer to work for Facebook, I’ve managed to knock my site, bringthejobshome.org totally offline and am unable to login.

Warning: require_once(/home/content/d/a/n/danl17/html/jobs-home/wp-content/plugins/jetpack/3rd-party/3rd-party.php) [function.require-once]: failed to open stream: No such file or directory in /home/content/d/a/n/danl17/html/jobs-home/wp-content/plugins/jetpack/jetpack.php on line 82

Fatal error: require_once() [function.require]: Failed opening required ‘/home/content/d/a/n/danl17/html/jobs-home/wp-content/plugins/jetpack/3rd-party/3rd-party.php’ (include_path=’.:/usr/local/php5/lib/php’) in /home/content/d/a/n/danl17/html/jobs-home/wp-content/plugins/jetpack/jetpack.php on line 82

Here is the code on jetpack.php on line 82:
*/

require_once( JETPACK__PLUGIN_DIR . ‘3rd-party/3rd-party.php’ );

Here is the code for /3rd-party.php”

<?php

/*
* Placeholder to load 3rd party plugin tweaks until a legit system
* is architected
*/

require_once( ‘buddypress.php’ );
require_once( ‘wpml.php’ );
require_once( ‘bitly.php’ );

I’ve spent mega hours researching the proble and trying to fix it, and would greatly appreciate help. Also, I’m not 100% sure that I am using wp v.4.2.1 at this point as I tried to fix the problem by overwriting wp-admin with what might be an older wp-admin file from 2/27/15. I am using the 2014 theme.