We develop an application in .NET that hosts web services using
HttpListener.
The application has already been deployed succesfully, but this week,
we had an issue when installing at a new customer site.  Occasionally

How to create error and information files separately using enterprise
library???
All errors from
TraceEventType.Error in an Error file in one location and all

I am new to design pattern and need help to understand How to achieve on a
conclusion which pattern is best suited for a Given Complex application.
For example, consider a Payroll application in ASP.Net and a Inventory
Management system Windows application.

WCF service is not visible from clients outside the development
computer.
I have the following service implementation
<services>

We are trying to figure out a solution and trying to find a good source of
information.
We have an enterprise product that loads many different .net assemblies -
all follow a specific interface but do various tasks.