diff --git a/CryptoExchange.Net/Converters/BaseConverter.cs b/CryptoExchange.Net/Converters/BaseConverter.cs
index e61f28c..8643d4d 100644
--- a/CryptoExchange.Net/Converters/BaseConverter.cs
+++ b/CryptoExchange.Net/Converters/BaseConverter.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using Newtonsoft.Json;
 
@@ -25,10 +26,19 @@ namespace CryptoExchange.Net.Converters
 
         public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
         {
-            var val = Mapping.SingleOrDefault(v => v.Value == reader.Value.ToString()).Key;
-            if (val != null)
-                return val;
-            return Mapping.Single(v => v.Value.ToLower() == reader.Value.ToString().ToLower()).Key;
+            if (reader.Value == null)
+                return null;
+
+            var value = reader.Value.ToString();
+            if (Mapping.ContainsValue(value))
+                return Mapping.Single(m => m.Value == value).Key;
+
+            var lowerResult = Mapping.SingleOrDefault(m => m.Value.ToLower() == value.ToLower());
+            if (!lowerResult.Equals(default(KeyValuePair<T, string>)))
+                return lowerResult.Value;
+
+            Debug.WriteLine($"Cannot map enum. Type: {typeof(T)}, Value: {value}");
+            return null;
         }
 
         public T ReadString(string data)
diff --git a/CryptoExchange.Net/ExchangeClient.cs b/CryptoExchange.Net/ExchangeClient.cs
index ef547a1..6c79bcb 100644
--- a/CryptoExchange.Net/ExchangeClient.cs
+++ b/CryptoExchange.Net/ExchangeClient.cs
@@ -206,13 +206,19 @@ namespace CryptoExchange.Net
             }
             catch (JsonReaderException jre)
             {
-                var info = $"{jre.Message}, Path: {jre.Path}, LineNumber: {jre.LineNumber}, LinePosition: {jre.LinePosition}. Received data: {data}";
+                var info = $"Deserialize JsonReaderException: {jre.Message}, Path: {jre.Path}, LineNumber: {jre.LineNumber}, LinePosition: {jre.LinePosition}. Received data: {data}";
                 log.Write(LogVerbosity.Error, info);
                 return new CallResult<T>(null, new DeserializeError(info));
             }
             catch (JsonSerializationException jse)
             {
-                var info = $"{jse.Message}. Received data: {data}";
+                var info = $"Deserialize JsonSerializationException: {jse.Message}. Received data: {data}";
+                log.Write(LogVerbosity.Error, info);
+                return new CallResult<T>(null, new DeserializeError(info));
+            }
+            catch(Exception ex)
+            {
+                var info = $"Deserialize Unknown Exception: {ex.Message}. Received data: {data}";
                 log.Write(LogVerbosity.Error, info);
                 return new CallResult<T>(null, new DeserializeError(info));
             }
diff --git a/CryptoExchange.Net/Logging/Log.cs b/CryptoExchange.Net/Logging/Log.cs
index 0f88f16..1557031 100644
--- a/CryptoExchange.Net/Logging/Log.cs
+++ b/CryptoExchange.Net/Logging/Log.cs
@@ -11,6 +11,7 @@ namespace CryptoExchange.Net.Logging
         private List<TextWriter> writers;
         private LogVerbosity level = LogVerbosity.Info;
 
+
         public LogVerbosity Level
         {
             get => level;
@@ -36,16 +37,16 @@ namespace CryptoExchange.Net.Logging
 
         public void Write(LogVerbosity logType, string message)
         {
-            foreach (var writer in writers)
+            string logMessage = $"{DateTime.Now:yyyy/MM/dd HH:mm:ss:fff} | {logType} | {message}";
+            foreach (var writer in writers.ToList())
             {
                 try
                 {
-                    if ((int) logType >= (int) Level)
-                        writer.WriteLine($"{DateTime.Now:yyyy/MM/dd hh:mm:ss:fff} | {logType} | {message}");
+                    writer.WriteLine(logMessage);
                 }
                 catch (Exception e)
                 {
-                    Debug.WriteLine("Failed to write log: " + e.Message);
+                    Debug.WriteLine($"Failed to write log to writer {writer.GetType()}: " + e.Message);
                 }
             }
         }
diff --git a/CryptoExchange.Net/Logging/ThreadSafeFileWriter.cs b/CryptoExchange.Net/Logging/ThreadSafeFileWriter.cs
index 950618a..21f1184 100644
--- a/CryptoExchange.Net/Logging/ThreadSafeFileWriter.cs
+++ b/CryptoExchange.Net/Logging/ThreadSafeFileWriter.cs
@@ -1,10 +1,14 @@
-using System.IO;
+using System.Collections.Generic;
+using System.IO;
 using System.Text;
 
 namespace CryptoExchange.Net.Logging
 {
     public class ThreadSafeFileWriter: TextWriter
     {
+        private static object openedFilesLock = new object();
+        private static List<string> openedFiles = new List<string>();
+
         private StreamWriter logWriter;
         private object writeLock;
 
@@ -12,16 +16,23 @@ namespace CryptoExchange.Net.Logging
 
         public ThreadSafeFileWriter(string path)
         {
-            writeLock = new object();
-            logWriter = new StreamWriter(File.Open(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read));
+            logWriter = new StreamWriter(File.Open(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.ReadWrite));
             logWriter.AutoFlush = true;
-        }
+            writeLock = new object();
 
+            lock(openedFilesLock)
+            {
+                if (openedFiles.Contains(path))
+                    throw new System.Exception("Can't have multiple ThreadSafeFileWriters for the same file, reuse a single instance");
+
+                openedFiles.Add(path);
+            }
+        }
 
         public override void WriteLine(string logMessage)
         {
-            lock (writeLock)
-                logWriter.WriteLine(logMessage);
+            lock(writeLock)
+                logWriter.WriteLine(logMessage);            
         }
 
         protected override void Dispose(bool disposing)