Dear Carlos,
Please save the following code to test.aspx, does it happen to this snippet?
<%@ Page Language="C#" %>
<%@ Register Namespace="CuteWebUI" Assembly="CuteWebUI.AjaxUploader" TagPrefix="CuteWebUI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="
http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Uploading multiple files like GMail</title>
</head>
<body>
<form id="form1" runat="server">
<CuteWebUI:UploadAttachments InsertText="Upload Multiple files Now" runat="server" ID="Attachments1" >
</CuteWebUI:UploadAttachments>
</form>
</body>
</html>
If this snippet works fine, it means this issue is related to your code, please extract your code to one example which can reproduce this issue and send it to
eric@cutesoft.net , I will test it on my end.
Thank you for your business