Hi,
We have confirmed that is an Adobe Flash Player issue.
Include v9 and v10.
If you want the Mac users upload very large file,
I think you can specify the UploadType to IFrame .
if(Context.Request.UserAgent.IndexOf("Mac")!=-1)
{
Uploader1.UploadType=CuteWebUI.UploadType.IFrame;
}
Regards,
Terry