[Koha] koha 2.3 installation problem

I need help on installing koha 2.3 on Linux these are the error that i found during the installation: ERROR 1064 (42000) at line 772: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'return char(4) default NULL, renewals tinyint(4) default NULL, timestamp tim' at line 9 read_config_file(/etc/koha.conf.tmp) returned undef at /usr/local/ koha/intranet/modules/C4/Context.pm line 195. Can't call method "config" on unblessed reference at /usr/local/koha/ intranet/modules/C4/Context.pm line 488. Problem updating database... thank you