Wordpress Thesis Theme Site Needs Coding Neds ASAP

Can anyone help me, here is my situation:

One of my wordpress blogs is not working properly. Please help this is my bread and butter site and I am fu*ked if I cannot get it back and running with the same content. I just need to clean the slate, but still use all my old posts, comments, etc. to retain my seo rankings

I am using the Thesis 1.7 theme and last night I tried to add a few categories to the drop down menu. When I clicked the save button it told me that the themes files were outdated and needed to be updated so I clicked update. Once I did this nothing happened. When I returned to my blog it looked all screwed up. That was last night.

This morning I tried to fix some of the problems with the sidebar and changed the settings in Thesis from 3 to 2 sidebar. When I did theis it changed the color font of the text.

Here is a screen sht of what my site used to look like www.Bosmol.com

I called bluehost my hosting company and they changed the theme. When I try to log in to my admin page I get the following error:

W3 Total Cache Error: some files appear to be missing or out of place. Please re-install plugin or remove /home2/bosmolco/public_html/wp-content/advanced-cache.php.

I remove this file and deleted the W3C cache plug in and I get the following error:
W3 Total Cache Error: some files appear to be missing or out of place. Please re-install plugin or remove /home2/bosmolco/public_html/wp-content/db.php.

I remove this and get the following error:
W3 Total Cache Error: some files appear to be missing or out of place. Please re-install plugin or remove /home2/bosmolco/public_html/wp-content/object-cache.php.

I remove this and now am able to edit the website