MS Enterprise Library for GAC

Since I need to use E/L for several apps on a current project, I want to GAC the whole thing. I also want to make it easy for all the devs (of course). Easy solution, right? Just create an installer to gac the E/L assemblies. Well, I had more trouble than one would expect. One of the major hurdles was fairly obscure, so I want to record it here.

Update App Config After GAC'ing Enterprise Library

The biggest gotcha I ran into is that using the E/L config tool for an application sets PublicKeyToken=null in the reference info. This will cause exceptions similar to "Logging.Configuration.ConfigurationException" to occur. To correct this problem, add the PublicKeyToken from the GAC for each E/L assembly to the appropriate location in the app's config files.