Parser Error: XXX is not a valid identifier...

Problem

You get this error when attempting to run your application:

Configuration Error

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: ‘XXX’ is not a valid identifier.

You have incorrectly named a code generation tag.

Solution

Please provide a correct name for the code generation tag. You can change the code generation tag’s “Name” attribute via Design Mode in Iron Speed Designer or you can re-create the page and provide a different value for the “Name” attribute.