DIALOG windows 1.8.5 draggapble problem

Hello. There is some problem with 1.8.5 version with dialog windows. For example:

<span class="signupregister">DIALOG</span>

<div class="modallogin" id="modallogin">

some text

</div>

<script type="text/javascript">

$(document).ready(function(){

$(".signupregister").click(function(){

$("#modallogin").dialog({

modal:true,

width:503,

height:191,

title: "text",

draggable: false,

resizable: false

});

});

});

</script>

If I for the first time click on DIALOG text eveyrhitng is OK...dialog windows will open..But after I close it and try to click again on text DIALOG...there is a JS error:

'''Error: uncaught exception: cannot call methods on draggable prior to initialization; attempted to call method 'destroy''''

So if I remove draggable: false, from script everythig is OK...Also evrything works great with 1.8.4 version...Hmm...I think that this is a only bug in new version

Hlásenie: Výnimka bola vygenerovaná, ale nebola zachytená

Riadok: 20

Znak: 64

Kód: 0

URI: http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js