I will send that to you via PM.
Until a couple of weeks ago we were using PHPNuke 6.5 which was ug'ed to 7.8. Having tinkered around with the problem I now have, I believe it has to do with the Login Module (script) at the front/homepage. For your information, following the installation of 7.8, I now had the original( 25 modules +1 new that being IP BAN) in the admin.php page, plus below it there were an additional Admin. Modules section, 13 of which only News and User were new additions. The remaining 11 were repeats, BUT a number of the 'older' modules were now only partially operative, e.g. NU_Calendar, and such modules as Edit User & User Configuration, now presented me with a <Access Denied>. The New 'Users' modules was ok, just not as good in my view.
To the problem at the Front Page, the Security Block which had been present on the Login and required completion, was not not operational and all but missing. However, there were NO problems with logins -- needing only userid and pswd MINUS the Sec. Numbers. Today, when the login problem was presented to me, I noticed that the 'standard' login block was now present, with NO partial Security Block present.
Also, I noticed in attempting to sort through the problem, that when I created a new user or EVEN inserted a NEW admin 'person' at the database level, neither were being recognized when I attempted to login. So something from the relevant section of the MYsql database is not being 'connected' to the Login module.
A final comment to give you some of the picture/problem; While none of the 2 new admin users will operate, I can login to admin module via my regular userid/pswd. This is NOT browser related as I've tried both. From the admin module, I can click Your Account, presented with a 2nd/3rd level login window, and I can login as a Regular User from this position, OR click Discussion Forum and login at bottom from there. However, to access YOUR ACCOUNT from here I have to again login as a Reg. User. This works.
Phew...... Now the fix to this mess? And sorry for the brevity