updated exception logging.

Exceptron.Client/ExceptronClient.cs

@@ -255,11 +255,6 @@ namespace Exceptron.Client
 
                 var fileName = frame.GetFileName();
 
-                if (!string.IsNullOrWhiteSpace(fileName))
-                {
-                    fileName = new FileInfo(fileName).Name;
-                }
-
                 var currentFrame = new Frame
                 {
                     i = index,

Marr.Data/Mapping/MappingHelper.cs

@@ -65,8 +65,8 @@ namespace Marr.Data.Mapping
                 }
                 catch (Exception ex)
                 {
-                    string msg = string.Format("The DataMapper was unable to load the following field: '{0}'.",
-                        dataMap.ColumnInfo.Name);
+                    string msg = string.Format("The DataMapper was unable to load the following field: '{0}'. {1}",
+                        dataMap.ColumnInfo.Name, ex.Message);
 
                     throw new DataMappingException(msg, ex);
                 }