Hello, I've checked out latest development version and updated current stable installation of ISPConfig3 in test environment. After going to start page the login screen is shown. Entering valid credentials give successful login in auth.log, but page is redirecting to login again. in login/index.php I can see that the content.php is login index page of login till "echo 'LOGIN_REDIRECT: ...'" in line 281. So login was definitely successful. Setting logging to debug messages doesn't help (sys_log still empty). Who can help me?