RadAsyncUpload "rowElement is null" error

I have a RadAsyncUpload control on a page that is giving me a javascript error (rowElement is null or not an object) when uploading a file.  The file name appears on the page, but the ClientFileUploaded event does not fire.  On this page I have drop downs that perform an auto postback to populate other drop downs before submission.  If I perform the file upload before the postback, it works, if afterwards, I get the javascript error.  I was able to debug enough to the determine that the ClientFileUploading event is firing and the temporary file is being created on the server.  What's even stranger still is that if I "remove" the errored file and re-upload it, I do not get a javascript error.  Only the first upload attempt after a postback gives me an error.  Does this make sense? Any help would be greatly appreciated.

Thanks,
Malcolm

Hi Malcolm Cooper,

Such error will appear if RadAsyncUpload is inside a container that is updated using AJAX. Fortunately we have fixed this issue for the latest service pack. Please upgrade.

Best wishes,
Genady Sergeev
the Telerik team