Transport Service wont start with error 1053

Have a server which is the only server in the office.  Runs all functions.  It has 2003 server SP2 and exchange 2007.  Has been running fine, until this morning.  Now all services will start, except for the Transport Service.  It fails with error:1053: The service did not respond to the start or control request in a timely fashion.

Here is the event log that gets written after this error.

The service configuration file could not be loaded for the following reason: System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize ---> System.Configuration.ConfigurationErrorsException: Unrecognized configuration section system.serviceModel. (C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Config\machine.config line 146)
   at System.Configuration.ConfigurationSchemaErrors.ThrowIfErrors(Boolean ignoreLocal)
   at System.Configuration.BaseConfigurationRecord.ThrowIfParseErrors(ConfigurationSchemaErrors schemaErrors)
   at System.Configuration.ClientConfigurationSystem.EnsureInit(String configKey)
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.get_AppSettings()
   at Microsoft.Exchange.ProcessManager.ServiceConfiguration.LoadAppSettingsConfigInt32(String configName, Int32& configvalue)
   at Microsoft.Exchange.ProcessManager.ServiceConfiguration.Load(ProcessManagerService processManagerService)
   at Microsoft.Exchange.ProcessManager.ProcessManagerService.Initialize()

Thank you for all of your help!

Chris