500 Error on upload

[Jeff Wickersham]

I have a simple upload page that runs fine locally on my dev box but throws a nasty 500 error on the server, I have set the upload folder permissions to allow full control to everyone--any ideas?

<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server">

        <link href="Upload.css" rel="Stylesheet" type="text/css" />
        <script type="text/javascript">
            //<![CDATA[
            function validationFailed(sender, eventArgs) {
                $(".ErrorHolder").append("<p>Validation failed for '" + eventArgs.get_fileName() + "'.</p>").fadeIn("slow");
            }
            //]]>
        </script>

        <div class="MainWrap">
            <div class="TopWrap">
                <div class="Holder">
                    <telerik:RadAsyncUpload runat="server" ID="RadAsyncUpload1" AllowedFileExtensions=".txt,.csv" TargetFolder="c:\Files\Import"
                        OnFileUploaded="RadAsyncUpload1_FileUploaded" OnClientValidationFailed="validationFailed">
                    </telerik:RadAsyncUpload>
                    <telerik:RadButton runat="server" ID="BtnSubmit" Text="Submit" Skin="Metro">
                        <Icon SecondaryIconLeft="5" SecondaryIconTop="3" SecondaryIconUrl="images/gear.png" />
                    </telerik:RadButton>
                    <p>
                        Select File To Upload (formats accepted .csv,.txt, only)
                    </p>

                    <div class="ErrorHolder">
                    </div>
                </div>
                <div class="Holder Right">
                    <asp:Panel runat="server" ID="ResultsPanel" Visible="false">
                        <asp:Panel ID="ValidFiles" Visible="false" runat="server">
                            <p>
                                <asp:Label runat="server" ID="lblFileUpload" Font-Bold="True" /><br/>
                                <asp:Label runat="server" ID="lblBatchId"/><br/>
                                 <asp:Label runat="server" ID="lblProcessTime"/>
                            </p>
                            <p>
                                <telerik:RadButton ID="BtnImport" runat="server" Text="Import" OnClick="BtnImport_Click" Skin="Metro" Visible="false">
                                    <Icon SecondaryIconLeft="5" SecondaryIconTop="3" SecondaryIconUrl="images/find.png" />
                                </telerik:RadButton>
                            </p>
                            <br />
                            <asp:Label ID="lblMessage" runat="server" Visible="false" />
                        </asp:Panel>
                        <asp:Panel ID="InvalidFiles" Visible="false" runat="server">
                            <p>
                                <strong>The following files were not saved due to exceeding the maximum total size:</strong>
                            </p>
                        </asp:Panel>
                    </asp:Panel>
                </div>
                <div class="BottomWrap">
                </div>
            </div>
        </div>
    </telerik:RadAjaxPanel>
 public void RadAsyncUpload1_FileUploaded(object sender, FileUploadedEventArgs e)
    {
        Label fileName = new Label();
        fileName.Text = e.File.FileName;
        Session["FileName"] = e.File.FileName;

        if (totalBytes < MaxTotalBytes)
        {
            // Total bytes limit has not been reached, accept the file
            e.IsValid = true;
            totalBytes += e.File.ContentLength;
        }
        else
        {
            // Limit reached, discard the file
            e.IsValid = false;
        }

        if (e.IsValid)
        {
            ValidFiles.Visible = true;
            ValidFiles.Controls.Add(fileName);
            BtnImport.Visible = true;
            lblMessage.Visible = true;
            lblFileUpload.Text = @"File Upload Was Successful";

        }
        else
        {
            InvalidFiles.Visible = true;
            InvalidFiles.Controls.Add(fileName);
        }
    }

[Hristo Valyavicharski]

Hi Jeff,

The Temporary folder also must have write permissions. If you are uploading larger files be sure that you configure your IIS correctly, as different IIS versions needs different configuration.

Regards,
Hristo Valyavicharski
Telerik

[Taras]

There is my very simple code. it is usercontrol in sharepoint. I'he given full permission to all users, iis apppool, network servise  for folder App_Data. But inside App_Data i have file "RadUploadTestFile" and its size is zero.
When i'm trying to upload file, i have "HTTP error code is 500".(I've attached image).
What's wrong with it?

<telerik:RadAsyncUpload ID="radAsyncUpload" runat="server" EnableInlineProgress="true" OnFileUploaded="RadAsyncUpload1_FileUploaded"
             MaxFileInputsCount="1" OnClientFileUploaded="onClientFileUploaded" OnClientFileUploadFailed="onClientFileUploadFailed" OnClientFileUploadRemoved="onClientFileUploadRemoved"
             PostbackTriggers="radUpload" />

        <telerik:RadButton ID="radUpload" runat="server" Text="Upload" Enabled="false" CausesValidation="false" />

        <telerik:RadScriptBlock ID="RadScriptBlock1" runat="server">
            <script type="text/javascript">
                Telerik.Web.UI.RadAsyncUpload.Modules.Silverlight.isAvailable = function () { return false; };

                function onClientFileUploadFailed(sender, args) {
                    args.set_handled(true);
                    alert(args.get_message());
                }


                function onClientFileUploaded(sender, args) {
                    var radUpload = $find("<%=radUpload.ClientID %>");

                    radUpload.set_enabled(true);
                }
                function onClientFileUploadRemoved(sender, args) {
                    var radUpload = $find("<%=radUpload.ClientID %>");

                    radUpload.set_enabled(false);
                }
            </script>
        </telerik:RadScriptBlock>

[Hristo Valyavicharski]

Hi Taras,

Check if the RadAsyncUpload handler is registered correctly. For additional information please take a look at this article.

Also you may try to open:

http://localhost:64992/Telerik.web.ui.webresource.axd?type=rau

if it is registered you will see:

{ "message" : "RadAsyncUpload handler is registered successfully, however, it may not be accessed directly." }

Regards,
Hristo Valyavicharski
Telerik