Check your security settings for MRE in the WebFOCUS Administration Console.
Compare them from your 7.65 environment to your 7.68 environment.
You could try editing user.htm.(D:\ibi\WebFOCUS76\basedir\user.htm)
Try creating a test user with the password you want for the admin account.
Copy the encrypted password over to the settings for the admin.
<A HREF='test.htm' NAME='test' MRFLAG=',email=' PASSWORD='1184e839c27edb581bc' ROLE='#AnalyticalUser'>test</A>
<A HREF='admin.htm' NAME='admin' MRFLAG='rcadmin,robot,library,email=' PASSWORD='1184e839c27edb581bc' ROLE='#MRAdministrator'>Default Administrator</A>
I'm not sure if this will work.
WebFOCUS 8.1.05M Unix Self-Service/MRE/Report Caster - Outputs Excel, PDF, HTML, Flat Files