I was making a lot of changes quickly through the admin section and suddenly found myself staring at the following line, instead of the home page:

Fatal error: Call to undefined function: node_list() in /usr/www/users/ramdak/sitename/development/includes/theme.inc on line 227

Looking at theme.inc, line 227 is as follows:
foreach (node_list() as $type) {

The interesting thing is that I don't remember doing anything with the node or node related modules at all. I did spend some time mucking around with the menus. And, I ran repair and optimize on the cache table through phpmyadmin before the problem occurred.

Fortunately it was a test site, but I had spent hours on it and created more than a dozen blocks with descriptions of what they would contain and it is all gone now. Is there any way to get back my test site?

Thanks in advance
Ramdak