Warning function.session-start Error - Can't Log In

[Zayin]

Hi,
I installed Mysidia ver 1.3.2, and have had errors every, single, possible step of the way. Right now I have this:

Warning: session_start() [function.session-start]: open(/var/chroot/home/content/86/10005386/tmp/sess_t32nvobci8bt4o571g187101g3, O_RDWR) failed: No such file or directory (2) in /home/content/86/10005386/html/classes/class_session.php on line 13

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/content/86/10005386/html/classes/class_session.php:13) in /home/content/86/10005386/html/classes/class_session.php on line 13

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/86/10005386/html/classes/class_session.php:13) in /home/content/86/10005386/html/classes/class_session.php on line 13

It pops up over my home page. I can't log in, because the session can't get off the ground. I've tried reinstalling it multiple times, reencoding files with UTF-8 (No BOM), checking for spaces, updating php, searching forums...

So please help me out. What's going on here?