Created Unassigned: HTML Editior error when upload image which page consist of query string [27675]

Hi i am using AJAX ToolKit Htmleditor in my webpage. Please see my code
Below

```
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server" EnablePageMethods="True" EnableScriptGlobalization="True" EnableScriptLocalization="true"
ScriptMode="Release">


</asp:ToolkitScriptManager>
<asp:TextBox ID="txtcContent" runat="server"></asp:TextBox>
<asp:HtmlEditorExtender ID="htmlContent"
TargetControlID="txtcContent" OnImageUploadComplete="ajaxFileUpload_OnUploadComplete" Runat="server">

<Toolbar>
<ajaxToolkit:Undo />
<ajaxToolkit:Redo />
<ajaxToolkit:Bold />
<ajaxToolkit:Italic />
<ajaxToolkit:Underline />
<ajaxToolkit:StrikeThrough />
<ajaxToolkit:Subscript />
<ajaxToolkit:Superscript />
<ajaxToolkit:JustifyLeft />
<ajaxToolkit:JustifyCenter />
<ajaxToolkit:JustifyRight />
<ajaxToolkit:JustifyFull />
<ajaxToolkit:InsertOrderedList />
<ajaxToolkit:InsertUnorderedList />
<ajaxToolkit:CreateLink />
<ajaxToolkit:UnLink />
<ajaxToolkit:RemoveFormat />
<ajaxToolkit:SelectAll />
<ajaxToolkit:UnSelect />
<ajaxToolkit:Delete />
<ajaxToolkit:Cut />
<ajaxToolkit:Copy />
<ajaxToolkit:Paste />
<ajaxToolkit:BackgroundColorSelector />
<ajaxToolkit:ForeColorSelector />
<ajaxToolkit:FontNameSelector />
<ajaxToolkit:FontSizeSelector />
<ajaxToolkit:Indent />
<ajaxToolkit:Outdent />
<ajaxToolkit:InsertHorizontalRule />
<ajaxToolkit:HorizontalSeparator />
<ajaxToolkit:InsertImage />

</Toolbar>
</asp:HtmlEditorExtender>

```

I need to upload image but after uploaded I getting this error.
__ncaught Sys.ArgumentException: Sys.ArgumentException: Cannot deserialize. The data does not correspond to valid JSON.
Parameter name: data__