Error initialization of rt3 beta 2 database


I’ve got this error when I am trying to create the database during the
installation of rt3 beta 2 with a postgres database:

make initialize-database

/usr/bin/perl //opt/rt3/sbin/rt-setup-database --action init --dba
postgres --prompt-for-dba-password

schema sucessfully inserted
Now inserting database ACLs
Now inserting RT core system objects
Checking for existing system user…not found. This appears to be a new
Creating system user…Can’t locate object method “begin_work” via
package “DBI::db” (perhaps you forgot to load “DBI::db”?) at
/usr/lib/perl5/site_perl/5.6.1/DBIx/SearchBuilder/ line 497,
line 577.
make: *** [initialize-database] Error 255

Has anybody know why I’ve got this error ?