Lost all styling

One of my clients sites just imploded:http://babbletree.com/
I've been grasping at straws while trying to troubleshoot. Only hint i've found in the logs:

updates/concrete5.7.5.3_remote_updater/concrete/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php:66 An exception occurred while executing 'INSERT INTO CollectionVersionBlocksOutputCache (cID, cvID, bID, arHandle, btCachedBlockOutput, btCachedBlockOutputExpires) VALUES (?, ?, ?, ?, ?, ?)' with params ["141", "1", "524", "Footer Mid", "Contact : info [at] babbletree.com : 307.413.5473 : PO Box 1754 Jackson WY 83001 ", 1610339004]:

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '141-1-524-Footer Mid' for key 'PRIMARY' (0)

The above seems like the smoking gun, but open to any suggestions!

Steps taken to troubleshoot:
1. clear cache (via cms and via ftp)

View Replies:
abigwonderful replied on at Permalink Reply
additional info:
when i login, I just get redirected to the homepage with no indication that i'm actually logged in. I can, however, manually enter the dashboard url and then see all access to backend.
jeevanism replied on at Permalink Reply
So this happened when you tried an upgrade of c5 ?
abigwonderful replied on at Permalink Reply
nope no upgrade. out of the blue - and continuing with strange behavior. Styling is now back, but site fails to recognize login. I'm starting to think this is an issue with the host (bluehost). will update if I find anything else