Error Help

http://codex.wordpress.org/Installing_WordPress#Common_Installation_Problems
try the top solution ?

What was the last thing you did to the blog before it went wrong?
Install a plugin ?
Install a theme ?

What did you edit the file with ?
Are you certain that the very very last thing in that file is

?>

and that there is no whitespace after that ? (Did you do the Delete key thing mentioned in the above link ?)

It is preferable to download the file and edit it with a program such as Notepad++ ( http://notepad-plus.sourceforge.net/uk/about.php )
and then reupload the changed file. That may be worth doing.

No – you could redownload WP (from the link at the top here), unzip it, then just upload the (now new) menu.php
Check your blog works okay, then edit it as you need to.

Do get it working first though – makes it easier to find errors should they occur.

Good stuff 🙂