I forgot to mention the blog itself is now available (http://www.trans-americas.com/blog), but I get the above error when I try to login to the admin page, so it’s just the admin page that is inaccessible..
Recopied the wp-includes/post.php file and got rid of that error now the error is:
Fatal error: Cannot redeclare add_link() (previously declared in /homepages/29/d15836/htdocs/TransAmericas/blog/wp-admin/includes/bookmark.php:17) in /homepages/29/d15836/htdocs/TransAmericas/blog/wp-admin/includes/bookmark.php on line 289
Thanks Patyuen,
Been trying to figure out why I cant save widget config for 2 hours in new 2.7.1. Finally did a search and came across your post 1st. Yep, 1&1 is my host and undoing Goog analytics fixes the issue.