The Application Host Helper Service encountered an error trying to read the property '%1' from configuration data from file ...

The Application Host Helper Service encountered an error trying to read the property '%1' from configuration data from file '%2', line number '%3'. The feature will be disabled.  To resolve this issue, please fix the property in the file and recommit the changes.  The feature will be enabled again if the configuration is correct.  The data field contains the error number.