Hi, i was interested in buying your ajaxuploader and tested in my environment
i found a really ugly bug in UploadModule.HandleResource method
you look for the header If-Modified-Since
the problem is that you don't provide an IformatProvider neither use tryparse or a try catch block
so if an application is localized this throw a System.FormatException: String was not recognized as a valid DateTime.
you should use DateTime.Parse(stringToParse, System.Globalization.CultureInfo.InvariantCulture) in this situation because this header uses RFC1123 for dates
this is a beginner bug...
you cannot sell wordwide your components and don't use IFormatProvider when parsing strings...