fileexplorer hangs when attempting to perform delete/move of images

[mac]

hey.. I am having a really weird issue that I can't pin down. First off.. I don't think it is permission based as the explorer does actually move the file, does upload, does delete . However what does happen is that it seems to hang at the ajax when trying to read the folder contents. I would accept that it may be permission based only if my file manager on my radeditor was behaving the same way.. which it is not.

FileExployer1 markup

<telerik:RadScriptManager ID="RSM" runat="server"></telerik:RadScriptManager>


 <table>
 <tr>
 <td valign="top">
   <telerik:RadFileExplorer ID="RadFileExplorer1" Runat="server" Width="400px">
         <Configuration  ViewPaths="~/Images/CMS" DeletePaths="~/Images/CMS" UploadPaths="~/Images/CMS" />
    </telerik:RadFileExplorer>
 </td>
 <td valign="top">

and this is my radeditor markup...(within a formview)

      <telerik:RadEditor Height="700px" Width="100%" ID="RadEditor1" Content='<%# Bind("PageContent") %>' Runat="server">
              <ImageManager DeletePaths="~/Images/CMS" UploadPaths="~/Images/CMS"   ViewPaths="~/Images/CMS"    />
</telerik:RadEditor>

every time I hit the delete button or try to drag an image around... it performs and posts back.. except the ajax seems completely jammed on the right side of the explorer where it lists the contents.
The hang does not clear and i need to repost the page.. once reposted I see all my files etc.

assembly version: 2009.02.0701.35

[mac]

I don't know how this started working but just playing around with the ctrl on a blank page with just a radscript manager and the thing behaved perfectly. this is the markup I pasted over my non working one and it just started working...

<telerik:RadFileExplorer Width="400" ID="RadFileExplorer1" Runat="server">
          <configuration DeletePaths="~/Images/CMS"
          UploadPaths="~/Images/CMS"
          ViewPaths="~/Images/CMS"/>
          <Configuration />
      </telerik:RadFileExplorer>

if anyone can see a difference between my non working and this working one... please let me know. I don't see any different wrt to naming or case conventions of the file paths.
weird.