RasAsyncUpload gives the following error in IE 8 when uploading a docx/xlsx document which is currently opened in word or excel in edit mode (not in the reading mode).
Unhandled Error in Silverlight Application Failed to Invoke: _onSilverlightError. at System.Windows.Browser.ScriptObject.Invoke(String name, Object[] args)
at UploadPrototype.EventManager.SilverlightError(String message, Int32 index)
at UploadPrototype.MainPage.<>c__DisplayClassb.<ProcessRequest>b__6()
I can only upload the document when I close the document in word/excel.
I'm using a blank Asp.net 4.0 web application. In the web.config I have the following because my website needs to be restricted to IE 8 (due to existing legacy code).
<httpProtocol>
<customHeaders>
<clear />
<add name="X-UA-Compatible" value="IE=8" />
</customHeaders>
</httpProtocol>
The problem only occurs when I put IE=8 and IE=9. It does not occur in IE 10 or 11 mode or in other browsers.
Is it a bug in RadSyncUpload? or a problem with silverlight in IE 8 and IE 9?
Thanks