ive experienced the refresh bug 2 - tried it, but does not help
i could not find the table site_configuration but i found a system_settings table
and changed the use_captcha field from 1 to 0 (maybe different modx version)
i updated the table and tried it again, yet i still get asked for a captcha code

but theres some good in the bad - when i try to login, it works
now, finally loged in i went to see the php info and could not find a gd library
so in addition i also went and checked the php.ini yet couldnt find anything