On fresh install of 2.1.1 and when trying to change ANY info in modules/system/admin.php?fct=preferences&op=showmod&mod=1&confcat_id=1
(Preferences Main »» General Settings) am getting blank page.
When trying to refresh this blank page getting "No valid security token"

The same and more problems when upgrading from 2.0.10

Can't even turn PHP Debug mode on :(

Apache version : Apache/2.0.50 (Win32)
PHP version : 5.0.3
MySQL version : 4.1.8-nt-log - extension : mysqli

everything with more or less default settings


what I am missing?