I have a big problem and i don't understand why!
I've installed the DEV-Edition.
The first problem was, that i can't create a new admin account (always following error: Please check admin username and password!). I tried a lot of usernames and passwords - but nothing worked.
I've contacted my provider (1und1) so the support employee runs the install-script - without any problems
. They said, that i should not use the "PERSISTENT CONNECTION". okay .. no problem at all -> i don't use it 
Okay ... admin-account with standard login in database - READY.
BUT NOW: if i want to login (login.php) ... and i REALLY enter the right(!) username and the right(!) password - the system always say: ERRORS DURING LOGIN.
Why??? Is it possible, that my Browser can't handle the login? I use Firefox. But i have tried also another pc with Internet Explorer: the same failure. False Security-Options or someting else?
I tried all the tips, which you can find here! Like from Oliver (root_path), change passwort over PHPMYADMIN, etc. etc.
PLEASE HELP ME OUT! THANK YOU VERY MUCH!
