I have a large application used in a production environment. My tiles setup is complex, with many tiles per page. The application works great with the exception of one thing. After starting the server on the first page load I get a apache.commons.digester.Digester error at line 789/Digester.getParser, throwing the exception
UnsupportedOperationException:: This parser does not support specification "null" version "null"
The amazing thing is, this error only happens on the first page load, all subsequent loads work just fine. Looking for help with this, let me know what info you need.