Unfortunately, we really need to see the log in this case. Would it be possible to try creating the log once again? Start with this code (modify the log path and request URL to  suit your needs):
            // initialize request creator
            var creator = new HttpRequestCreator();
            creator.LogWriter = new FileLogWriter(@"c:\temp\rebex-log.txt", LogLevel.Verbose);
            // issue a request
            var request = creator.Create("
https://test.rebex.net/");
            var response = request.GetResponse();
            // read the response and discard it
            using (var stream = response.GetResponseStream())
            {
                stream.CopyTo(Stream.Null);
            }
            response.Close();