Service Interceptor Help!

Hi Guys

I have been trying to build my first ever Service Interceptor but I have hit a few issues and wondered if any of you guys could help!  In an attempt to get this to work I have just tried to write a line in the Tessitura Log as per Ryan's "Hello World" interceptor but I still can't even get this to write in to the log!  Any help would be great.

I have put together a very simple interceptor that looks like below and built in visual studio and copied over DLL to the plugins folder.  I have enabled both plugs and reload plugin config. 

using Tessitura.Services.Common.Interceptor.Client;
using Tessitura.Services.Common.Logger;

namespace Tessitura.WMC.Interceptor
{
public class HelloInterceptor
{
   public static PluginData Operation(PluginData input)
   {
           input.Logger.Trace("Hello World!!");
           return input;
    }

}
}

I have registered this as a plugin like so in the xml doc.

<PluginConfigs>
   <PluginConfig>
      <UriMatch>CRM/*</UriMatch>
      <Verb>GET</Verb>
      <FullPluginName>Tessitura.WMC.Interceptor.HelloInterceptor</FullPluginName>                
      <PluginPlacement>POST</PluginPlacement>
   </PluginConfig>
</PluginConfigs>

I have looked in the TessituraService Logs and I can't see anything that might cause a problem!  I did have a typo in my XML which I did fix.  So a bit stuck on how to get the "Hello World" to appear in the logs.  I have tried load of different UriMatches including <UriMatch>CRM/Constituents/*/Snapshot</UriMatch>  but still nothing appears in the logs after I search for and open a constituent record.

Do you guys have anything that you think i should check?  Any help would be much appreciated!

Thanks

Nick