fimware Update + custom Web interface

I updated the firmware from release A to release F after getting an Upgrade package. Within the update a root account was created and now I am not able to start the Custom Web Interface on startup by typing the IP address. I always get the Object not found page of the Connect ME.
If I login I can start it, so I believe there is the problem within the account. On the Upgrade package, which was delivered it works fine, but there is no root account to log in for operating.
How can I solve?