line numbers of exceptions no longer show

[Jeff Hughes]

I am pulling my hair out trying to figure out why the line number of the exception are not showing up in production.   In my dev and QA environment it works fine.   Example: QA / DEV   Exception: System.Exception Message: System.Exception: fun with exceptions    at Transcripts.login.Page_Load(Object sender, EventArgs e) in d:\inetpub\wwwroot\transcripts\login.aspx.cs:line 57    at System.Web.UI.Control.OnLoad(EventArgs e)    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Page.ProcessRequestMain()   PROD   Exception: System.Exception Message: System.Exception: fun with exceptions    at Transcripts.login.Page_Load(Object sender, EventArgs e)      at System.Web.UI.Control.OnLoad(EventArgs e)    at System.Web.UI.Control.LoadRecursive()    at System.Web.UI.Page.ProcessRequestMain()   the line number does not exist in prod. Any clues??   Here is my config               <appender name="FileAppender" type="log4net.Appender.FileAppender">                               <filter type="log4net.Filter.LevelRangeFilter">                         <param name="LevelMin" value="WARN" />                         <param name="LevelMax" value="FATAL" />                   </filter>                                     <param name="File" value="transcripts-Log.config" />                   <param name="AppendToFile" value="true" />                   <param name="Header" value="[Header]\r\n"/>                   <param name="Footer" value="[Footer]\r\n"/>                       <param name="BufferSize" value="512"/>                                  <param name="Lossy" value="true"/>                   <evaluator type="log4net.spi.LevelEvaluator">                         <param name="Threshold" value="WARN"/>                   </evaluator>                                                 <layout type="log4net.Layout.PatternLayout">                         <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" />                   </layout>             </appender>             <root>             <!--                   ALL                   DEBUG                   INFO                   WARN                   ERROR                   FATAL                   OFF             -->                   <priority value="ALL"/>                   <appender-ref ref="SMTPAppender"/>                   <appender-ref ref="FileAppender"/>              </root>     Thanks   Jeff