Sure, they are correct that the error is in the code.
However, the server settings are making it impossible to determine where in the code the error is occurring by displaying a generic error message.
To find the problem code, either the server will need to display the real error, or the error will need to be looked up in the servers error logs.
The key thing to bring to godaddy's attention is that you dont believe there is a problem with the server, but we need their help to enable us to debug the code. Not being able to see the real error means we are looking for a very small needle in a very large haystack.