A converted Express mainframe display session doesn't connect to the host after upgrading to version 6.0. The following information is displayed in the session: CINIT error (Server code is 08210000). Error restart. Application name.

Express client sessions are no longer supported in Web-to-Host version 6.  The solution is to create a new Web-to-Host version 6.0 Pro client session.  Pro client sessions contain all of the functionallity of the previous Express sessions, and include addtional features to enhance user productivity.