solved Site not working after server bandwidth shut down

Last week I was working on a site for a friend, then my site ran out of bandwidth space. I was working on a reseller hosting account so I hosting bandwidth was limited, so then I added more bandwidth and the site came back online but it's a blank page with my site content folders in a list.

Site is: http://trackbangaz.com/

My error log is showing:

[10-Jan-2016 09:39:00 UTC] PHP Fatal error: require_once(): Failed opening required '/..../..../public_html/modules/jrCore/include.php' (include_path='.:/usr/lib/php:/usr/local/lib/php:/usr/local/php54/lib/php') in /..../..../public_html/install.php on line 71
[10-Jan-2016 19:52:13 UTC] PHP Fatal error: require_once(): Failed opening required '/..../..../public_html/modules/jrCore/include.php' (include_path='.:/usr/lib/php:/usr/local/lib/php:/usr/local/php54/lib/php') in /..../..../public_html/install.php on line 71
[11-Jan-2016 04:57:25 UTC] PHP Fatal error: require_once(): Failed opening required '/..../..../public_html/modules/jrCore/include.php' (include_path='.:/usr/lib/php:/usr/local/lib/php:/usr/local/php54/lib/php') in /..../..../public_html/install.php on line 71

Does anyone know a solution to my problem? Thanks.

updated by @beatrelease: 04/24/16 02:17:30AM

Seams like your sites .htaccess is not working properly. check that it is in the root folder.

Then try clearing the caches manually:

Docs: "Somethings wrong, what do I do"
http://www.jamroom.net/the-jamroom-network/documentation/problems/114/somethings-wrong-what-do-i-do

Thanks @michael I'll try that ASAP.

One question though, if I reset cache will that delete pages created in site builder? Or how do I access those pages I created with the site builder module? Those are the most important files for me to recover because I plan on moving to a new hosting but can't figure out how to transfer over pages created with site builder.

Pages built with Site Builder are stored in the database, clearing the cache will not effect them.

--edit--
You can also export Site Builder built pages via the TOOLS tab in the acp:
ACP -> SITE -> SITE BUILDER -> TOOLS -> EXPORT BACKUP
updated by @michael: 01/18/16 12:18:02PM

Thanks @michael