Critical Error: SiteUrls.Config

The file containing the SiteUrl Data could not be loaded.

Please contact your CommunityServer administrator. A technical explanation of why this error is caused is below.

Community Server expects to find a valid XML file containing all of the links for a community. By default, this file is located at the root of the with the name SiteUrls.config. 

A common error is to included unescaped XML characters, such as "&" when defining a querystring.

If available, the location of the error will be listed below:

Unable to open connection to data provider.

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

For more information you can also visit http://CommunityServer.Org the home of the CommunityServer Forums development team.