Site crash

I was working on my site earlier today, No problem. The site has been up for years

I just tried to access the cataloge with a browser and it gives me a 404 error and http://mywebsite/online/zc_install/index.php
The zc-install folder does not exist. I upgraded to 1.38 six months ago.

Also when I try to acess the admin I get
Warning: require(/home8/sub004/sc15698-NLZR/www/online/includes/autoload_func.php) [function.require]: failed to open stream: No such file or directory in /mounted-storage/home6a/sub004/sc15698-NLZR/www/online/admin/includes/application_top.php on line 147

Fatal error: require() [function.require]: Failed opening required '/home8/sub004/sc15698-NLZR/www/online/includes/autoload_func.php' (include_path='.:/usr/share/php5/') in /mounted-storage/home6a/sub004/sc15698-NLZR/www/online/admin/includes/application_top.php on line 147

I looked and my application top ends at line 131

ANY IDEAS

I just looked at my other site and is messed up to. Its telling a system setup is required like I am starting all over again. this sit has been running for months

Have you asked your host what they changed? What version of Zen Cart?

I am thinking its the host. its almost like the database is not connected. Site one is 1.37 Site two is 1.38.

I did not change any thing i just added a new product this morning.

Its weird when you access the site with a browser it changes the address and looks for the zc install file.

I will ask the host. They are usually not very helpful.

Sorry.

I checked my email and there was a note from the server.

To provide you with the best possible service we are moving your account
to a new storage system for better performance. In most cases no work
is required on your part. Only if you are using scripts this is using
the full system path they will need to be updated.

Guess I Paniked
The Hitchhikers Guide to the Galaxy says
DONT PANIC