Sharepoint edit form using $().SPServices.SPGetCurrentUser() not displaying until I move the mouse or hit a key

I have a custom EditForm.aspx in which I am using Javascript to hide some rows for some users. In order to determine the current user, I am calling $().SPServices.SPGetCurrentUser(). My code works perfectly on one server, but on a different one, it does this weird thing -- the edit page does not display until you do something like moving the mouse or hitting a key. You just see a blank screen except for a blinking cursor where one of the text fields would be. As soon as you move the mouse or hit a key, the page displays instantly.

To narrow the range of possibilities, I removed all javascript code except this single line

<script type="text/javascript" language="javascript" src="/blah/blah/js/jquery.SPServices-0.5.8.min.js"></script>
<script type="text/javascript">
$().SPServices.SPGetCurrentUser()
</script>

from the page. Comment it out, the page works normally. Leave it in, and you get the weird behavior described above. I tested the result of the function and it provides the cur开发者_开发知识库rent user correctly. And again, on the other server, it works fine.

Ideas?

If you look at the SPServices.js file, you will notice that the function extends a few options. One of which is the fieldName. You should pass it a fieldName like maybe Title which will return the person Full Name. The problem is though, that is data does not exists, it seems to break. I dont think there is really a "returns false when empty" feature to it.

var userName = $().SPServices.SPGetCurrentUser({
fieldName: "Title"
});

SPGetCurrentUser Wiki