Netscape Navigator uses the same session ID across multiple windows. This creates problems if you try to log into Cisco Emergency Responder using different IDs. Normally, you can open multiple windows when logged in as a system administrator. With Internet Explorer (IE), if you open a separate session by starting a new IE instance (rather than by opening a new window from an existing session), IE uses different session IDs. You should be able to log in using separate IDs (for example, as a user and as an administrator or as LAN switch and Emergency Response Location [ERL] administrators).
To resolve this issue, do not use Netscape Navigator for multiple Cisco Emergency Responder sessions.
For more information about resolving Cisco Emergency Responder, refer to these documents: