Change Login Module

Question

I think this is an old question. I’m trying to customizing the logon page. I’m using the document Customizing the Logon user Interface of SAP Enterprise Portal. I’m in the Enterprise Portal 6.0 SP 11, J2EE version 6.40.
After executing all the changes that the document indicates:
-     Like created a new project
-     I change the authschemes.xml, to my project name
When accessing the portal the Following error appears:
     Portal Runtime Error
An exception occurred while processing a request for :
iView : N/A
Component Name : N/A
The exception was logged. Inform your system administrator..
See the details for the exception ID in the log file
Those any one can Help me.
Best Regards
Thanks In advanced
Pedro Miguel Rodrigues

Answer 1

The problem exception is not a problem at this moment. 
Now I have 2 problems:
Frist:
I’ have made the changes and create a Logon:
User (Input Field)
Password (Input field)
Logon (Bottom).
Now when I click in the logon, it executes the logon, but it “log” on the same page and those not refresh the page (I’have 2 headers, the first header disappears after using the button refresh off the IE.
Second:
When the user places a wrong password. The system call the standard logon, but I don’t want this situation.
Those any one can help on this 2 situations