Hi. I use .Net MVC (C #) and uploadify in a Xp machine.
I can use it whitout problems in mi local machine. I can upload files up to 40 mb.
When i try to pass it like a Virtual Directory to another server in a win 2003 machine I can't upload files.
It throws IO error 2038 and if the file is a little heavy, the bar not arrive to 100%.
Is the file is smmaler, arrive to 100%, but dosn't do the file upload.
Sometimes with smaller files can uplaod file, but only in few times.

Anyone can help my.
This is the code in the controler ("contrato") that upload the file.
" string upload_dir = System.Configuration.ConfigurationManager.AppSettings["upload_dir"];
if (!System.IO.Directory.Exists(upload_dir + cod_contrato))
{
System.IO.Directory.CreateDirectory(upload_dir + "\\" + cod_contrato);
hpf.SaveAs(upload_dir + "\\" + cod_contrato + "\\" + System.IO.Path.GetFileName(fecha_estampilla + hpf.FileName.ToUpper()));
"

this is the uploadify code
" $('#fileInput').uploadify ({
'uploader' : '$siteroot/Content/images/uploadify.swf',
'script' : '$siteroot/contrato/subircontrato.rls',
'cancelImg' : '$siteroot/Content/images/cancel.png',
'buttonImg' : '$siteroot/Content/images/examinar.png',
'buttonText' : 'Examinar',
'width' : '110',
'height' : '22',
'sizeLimit' : 41943040,
'folder' : 'Archivos',
'queueID' : 'fileQueue',
'queueSizeLimit' : 5,
'fileDesc' : 'No se pueden subir archivos ejecutables',
'fileExt' : '*.jpg;*.jpeg;*.png;*.gif;*.zip;*.rar;*.pdf;*.doc;*.xls;*.docx;*.xlsx',
'auto' : true,
'multi' : true,
'simUploadLimit' : 1,
'scriptData' : {'contrato' : $('#p_contrato').val()},
'onError' : function(a, b, c, d) {
if (d.status == 404)
{
//alert('Could not find upload script. Use a path relative to: ');
$('#mensaje').html("
");
$('#mensaje').append("No se pudo subier el archivo.");
$('#mensaje').append('Aceptar');
$('#dialogo').jqmShow().bgiframe();
}
else if (d.type === "HTTP")
{
//alert('error ' + d.type + ": " + d.info);
$('#mensaje').html("
");
$('#mensaje').append("Error " + d.type + " : " + d.info);
$('#mensaje').append('Aceptar');
$('#dialogo').jqmShow().bgiframe();
}
else if (d.type === "File Size")
{
//alert(c.name + ' ' + d.type + ' Limit: ' + Math.round(d.sizeLimit / 1024) + 'KB');
$('#mensaje').html("
");
$('#mensaje').append('El archivo debe tener un tamaño máximo de 40MB.');
$('#mensaje').append('Aceptar');
$('#dialogo').jqmShow().bgiframe();
}
else
{
//alert('error ' + d.type + ": " + d.info);
$('#mensaje').html("
");
$('#mensaje').append('Error ' + d.type + ' : ' + d.info);
$('#mensaje').append('Aceptar');
$('#dialogo').jqmShow().bgiframe();
}
},
'onAllComplete' : function(a,b){
$('#mensaje').html("
");
$('#mensaje').append('Cantidad de archivos subidos: '+b.filesUploaded+'
');
$('#mensaje').append('Cantidad de errores registrados: '+b.errors+'
');
$('#mensaje').append('Aceptar');
$('#dialogo').jqmShow().bgiframe();
}
});
"

and for last this is part of my webconfig file
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Thx for any help.

PD: sorry for my bad english.