Problem mapping fields with a Database Target - nlog

Question

I am having a problem getting this to work correctly. I tried it with a straight INSERT statement and a Stored Proc also with the same bad results.
On the example below, the Version number is ending up in the ErrorMsg field in the database. The Log Level ends up in the UserName. Any idea why is this happening? The commandtext statement is correct.
<target xsi:type="Database"
name="dberrorlog"
connectionStringName="Logger"
keepConnection="true"
useTransactions="true" >
<commandText>
INSERT INTO [Logs].[LogError]
([ProgName], [CreatedDate], [CompName], [LogLevel], [UserName], [ErrorMsg], [Version], [SourceMethod], [StackTrace])
VALUES
(#ProgName, #CreatedDate, #CompName, #LogLevel, #UserName, #ErrorMsg, #Version, #SourceMethod, #StackTrace)
</commandText>
<parameter name="#ProgName" layout="MyProgram"/>
<parameter name="#CreatedDate" layout="${date:format=MM\-dd\-yyyy HH\:mm\:ss}"/>
<parameter name="#CompName" layout="${machinename}"/>
<parameter name="#LogLevel" layout="${level}"/>
<parameter name="#UserName" layout="${aspnet-user-identity}"/>
<parameter name="#ErrorMsg" layout="${exception:format=ToString}"/>
<parameter name="#Version" layout="1.0.0.0"/>
<parameter name="#SourceMethod" layout="${callsite}"/>
<parameter name="#StackTrace" layout="${stacktrace:format=Raw}"/>
</target>
Any Help is greatly appreciated.