Another test to see if you're in this position is to open the Application Repository and see if you see the following error HTTP Status 403 Forbidden If you try to open the Work Center interface you might see the following error
The following error appears in the browser when you attempt to connect in this scenario: This page contains the following errors: error on line 109 at column 72: EntityRef: expecting ';' Below is a rendering of the page up to the first error.
If you use a named instance of SQL Server 2005 Express then you must connect using the dynamic port rather than the default port of 1433. This is defined in SQL Server Configuration Manager.
In a standard single JBOSS configuration you will get a security token error when trying to connect from Composer. In a JBOSS cluster configuration the VIP (cluster virtual IP address) will just give a message that the configuration is incorrect.