APPLICATION WARNING #100 & error_api.php:166 Problem (1.1.8)

[Kanje]

Hi,
yesterday I installed Mantis on my webserver.
When I go now to the page are in the top these three errors:

APPLICATION WARNING #100: Configuration option "db_schema" not found.

SYSTEM WARNING: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /var/www/vhosts/vip-ltd.de/httpdocs/projektgruppen/core/error_api.php:166)

SYSTEM WARNING: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /var/www/vhosts/vip-ltd.de/httpdocs/projektgruppen/core/error_api.php:166)

Anybody know how I can correct the error?

Thanks for help,
Kanje

P.S: Sorry for my bad english, i'm only 14 years old and not so good in english

[Kanje]

/push >> need help

[vboctor]

No one has reported this error. Did you ever get it working? Did you try 1.2.0rc2?

[Kanje]

I have installed 1.2.0rc2 yesterday. When i try to login comes this error:

Fatal error: Call to a member function set() on a non-object in /var/www/vhosts/vip-ltd.de/httpdocs/projektgruppe/lang/strings_english.txt on line 292