[rt-users] Vintage upgrade fails

["Tamás, Szép"]

Hello,

I try to upgrade RT 3.0.12 to RT 4.0.20. It works well until finally I
get to the
	make upgrade-database
command which dies. See below. I do these as root user.

-----BEGIN-----
root at ubuntu:/w/install/new/rt# make upgrade-database

/usr/bin/perl -I/opt/rt4/local/lib -I/opt/rt4/lib sbin/rt-setup-database
--action upgrade --prompt-for-dba-password
In order to create or update your RT database, this script needs to
connect to your  mysql instance on localhost (port '') as root
Please specify that user's database password below. If the user has no
database
password, just press return.

Password: -----HERE I TYPE THE DB ROOT PASSWORD-----
Working with:
Type:	mysql
Host:	localhost
Port:	
Name:	rt4
User:	rt_user
DBA:	root
Enter RT version you're upgrading from: 3.0.12 -----UPGRADING FROM THIS-----

Going to apply following upgrades:
* 3.1.0
* 3.1.15
-----CUT TO SHORTEN THE LIST-----
* 4.0.18
* 4.0.19

Enter RT version if you want to stop upgrade at some point,
  or leave it blank if you want apply above upgrades: -----I JUST PRESS
ENTER HERE-----

IT'S VERY IMPORTANT TO BACK UP BEFORE THIS STEP

Proceed [y/N]:y
Processing 3.1.0
Now populating database schema.
Now inserting database ACLs.
-----HERE COMES THE ERROR-----
DBI connect('dbname=rt4;host=localhost','rt_user',...) failed: Access
denied for user 'rt_user'@'localhost' (using password: YES) at
/usr/local/share/perl/5.14.2/DBIx/SearchBuilder/Handle.pm line 105.
Connect Failed Access denied for user 'rt_user'@'localhost' (using
password: YES)
 at /w/install/new/rt/sbin/../lib/RT.pm line 211.
make: *** [upgrade-database] Error 255
-----END-----

I need help. Thank you.

Best regards,

Tamas Szep
GovCERT-Hungary