I am still using god old Dragonfly 188.8.131.52 since 2006.
Only few minor changes since upgrade to PHP Version 5.2.17 (http://www.cvecara-neven.com/phpinfo.php)
it works every day with thousands of visitors without a problem, but it seems that from some time ago Contact form (http://cvecara-neven.com/Contact.html) can't send emails becuae of "Please enable cookies to post on this site. If you feel that you have reached this message in error please refresh the preceding page once and post again".
How, ever if I first execute www.cvecara-neven.com/test.php it seems thatbroswer "register" itself starting a new session. Then a visitor (in this case my self) can send email, in other words contact for works as intended. As long as browser is not closed and then reopened again. Also, if I use contact form as Admin then it works.
It seems that it won't work only for unregistered users.
I tried solutions proposed here ( dragonflycms.org/FAQ/cat=13.html ), and everything is OK. tmp directory is writable and I see that script is writing into that folder. Also, admin has NOT set php.ini to auto-register a session. I checked it. it is set to 0.
Proposed solution as to add: