For your problem of division by 0 mathiau,
I think it's cauz you used it on your local machine ?!
It shows this error because the admin has created 0 post and 0 thread
This is quite impropable on a real forum
In the admin_page.php, find
PHP Code:
$userinfo[pthread] = round(($nbethreaduser / $nbethread) * 100,2);
and replace it with
PHP Code:
if ($nbethread>0) {
$userinfo[pthread] = round(($nbethreaduser / $nbethread) * 100,2);}
else { $userinfo[pthread]=0;}
then replace
PHP Code:
$userinfo[ppost] = round(($userinfo[posts] / $nbepost) * 100,2);
by
PHP Code:
if ($nbepost>0) {
$userinfo[ppost] = round(($userinfo[posts] / $nbepost) * 100,2);}
else { $userinfo[ppost]=0;}
Don't have tried it but it should work perfectly