tinyMCE is undefined line 219

Since upgrading to 2.1 my RTE/WYSIWYG hasn’t been working. I’ve tried clearing the cache but to no avail. I get the same problem on other computers, and with both IE7 and FF. FF puts the error (line 219) at this:

if ( tinyMCE.isMSIE )

My problem is, this line isn’t in post-new.php, and I can’t find it at all. This is the whole paragraph:

if ( tinyMCE.isMSIE )
document.getElementById(‘title’).onkeydown = function (e)
{
e = e ? e : window.event;
if (e.keyCode == 9 && !e.shiftKey && !e.controlKey && !e.altKey) {
var i = tinyMCE.getInstanceById(‘content’);
if(typeof i == ‘undefined’)
return true;
tinyMCE.execCommand(“mceStartTyping”);
this.blur();
i.contentWindow.focus();
e.returnValue = false;
return false;
}
}

Anyone know where this is, and perhaps what may be the problem? I’m at the end of my programming knowledge. I’m currently using 2.1.1. Thanks!