Pull Dynamics CRM 4 customizations without the web UI

Hello Experts,

I seem to have hosed my on-premise dynamics crm application.  The database is fine, but when anyone tries to log in they get the error message below.  I was trying to install and configure the email router, which might have something to do with it.  After fighting it for 24 hours, I want to give up and rebuild the server, but I don't have a recent export of my customizations.  Again, the database is fine, but I don't know how to pull the customization XML export without going through the UI.

1.  Any insight into fixing the server as-is will be awesome.
2.  If not that, can I pull the customizations in such a way that I can restore the server?

Error Description:
Column 'ShowAuthenticationErrors' does not exist on Table 'ServerSettings'
 
Error Details:
Column 'ShowAuthenticationErrors' does not exist on Table 'ServerSettings'
 
Full Stack:
[CrmException: Column 'ShowAuthenticationErrors' does not exist on Table 'ServerSettings']
   at Microsoft.Crm.ServerLocatorService.HasOnlyCachedColumns(Table table, String[] columns)
   at Microsoft.Crm.ServerLocatorService.RetrieveById(String tableName, Object primaryKey, String[] columns)
   at Microsoft.Crm.ServerLocatorService.GetSiteSetting(String settingName)
   at Microsoft.Crm.LocatorService.GetSiteSetting(String settingName)
   at Microsoft.Crm.Authentication.AuthenticationEngine.Execute(Object sender, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
 
Other Message:
 
Error Number:
0x80040216

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