DBI with versions older than 1.6 are not supported

docs/eHive_install_usage.txt

@@ -15,7 +15,7 @@
 
 	see http://dev.mysql.com/downloads/
 
-1.3. Perl DBI API
+1.3. Perl DBI API version 1.6 or higher
 	Perl database interface that includes API to MySQL
 
 	# see http://dbi.perl.org/

modules/Bio/EnsEMBL/Hive/DBSQL/BaseAdaptor.pm

@@ -2,6 +2,7 @@ package Bio::EnsEMBL::Hive::DBSQL::BaseAdaptor;
 
 use strict;
 no strict 'refs';   # needed to allow AUTOLOAD create new methods
+use DBI 1.6;        # the 1.6 functionality is important for detecting autoincrement fields and other magic.
 
 use base ('Bio::EnsEMBL::DBSQL::BaseAdaptor');