Error message: Site Not working after upgrade

I had just updated to 4.1 which I had issues with trying to update, I had figured it all out and now it’s running on 4.1
Once I was able to get back on, there was 2 plugin updates, so I tried to update them (they were jetpack and backup)
The update stalled out and it said to try again in a few mins. So I tried again in a few mins and then my site went offline again.

Now I am getting this message each time I try to log in as a customer trying to view my site, or if I try to log into my cpanel to edit my site.

“Warning: require_once(/home/content/83/10889483/html/wp-content/plugins/jetpack/class.jetpack.php) [function.require-once]: failed to open stream: No such file or directory in /home/content/83/10889483/html/wp-content/plugins/jetpack/jetpack.php on line 37

Fatal error: require_once() [function.require]: Failed opening required ‘/home/content/83/10889483/html/wp-content/plugins/jetpack/class.jetpack.php’ (include_path=’.:/usr/local/php5_3/lib/php’) in /home/content/83/10889483/html/wp-content/plugins/jetpack/jetpack.php on line 37″