Your problem seems to reside in your php.ini file. I think you'll need to edit this file by hand (not hard at all, just use a plain-text editor like notepad...do not
use MS Word). Ask your hoster where to find this file if you do not already know.
Simply change this text around line 158:
safe_mode = On
from "On" to "Off"
and see if this helps your issue
The second error is nothing to worry about. It is trying to redirect you somewhere but can't because the previous error is displayed. If you resolve error #1, error #2 should also disappear.