In request-tracker-3.8, it's not possible to change or create a user, queue, etc.?

Question

Perl

Greetings.
Installed request-tracker-3.8.8 from debian-backports on debian lenny machine (apache2, mod-fcgid, postgresql-8.4.7). Everything was installed successfully, the entrance to RT is carried out, you can walk through the menu. However, if you try to start an application, a new user, or change any user or queue settings, errors like " Unable to load queue" or "Couldn't load user ''" come out. The problem, apparently, is not in the database. because tested with postgres 9.0, 8.4 and SQLite. The question is where to look and what to dig. Under the cut debug log.
I will be very grateful for your help.
Only the following in the log:
[Thu Feb 17 10:34:44 2011] [debug]: SQL(0.000036s): SELECT main.* FROM CustomFields main WHERE (main.Disabled = '0')
AND (main.LookupType = 'RT::User' OR main.LookupType = NULL) ORDER BY main.Name ASC; (
/usr/share/request-tracker3.8/lib/RT/Interface/Web.pm:780)
[Thu Feb 17 10:34:46 2011] [error]: WebRT: Couldn't load user '' (/ usr/share/request-tracker3.8/html/Elements/Error:8
2)
Trace begun at /usr/share/request-tracker3.8/lib/RT.pm line 302
Log::Dispatch::__ANON__('Log ::Dispatch=HASH(0x5108290)', 'WebRT: Couldn\'t load user \'\'') called at /usr/share/requ
est-tracker3.8/html/Elements/Error line 82
HTML::Mason ::Commands::__ANON__('Why', 'Couldn\'t load user \'\'') called at /usr/share/perl5/HTML/Mason/Component.pm
line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x5fda380)', 'Why', 'Couldn\'t load user \'\'') c
alled at / usr/share/perl5/HTML/Mason/Request.pm line 1278
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef , undef, 'Why', 'Couldn\'t load user \'\'') called at /usr/share/request-tracker3.8/l
ib/RT/Interface/Web.pm line 863
HTML::Mason: :Commands::Abort('Couldn\'t load user \'\'') called at /usr/share/request-tracker3.8/html/Admin/Users/Modify.html
line 298
HTML::Mason:: Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x7fc2baf15988)') called at /usr/share/perl5/HTML
/Mason/Request.pm line 1278
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/perl5/HTML/Mason/Request.pm line 937
HTML::Mason::Request::call_next('RT::Interface::Web::Request=HASH(0x7fc2baf068b0)') called at /usr/ share/request-trac
ker3.8/html/Admin/autohandler line 49
HTML::Mason::Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason::Component ::run('HTML::Mason::Component::FileBased=HASH(0x5fff878)') called at /usr/share/perl5/HTML/Mason/Request.pm line 1278
eval {...} at /usr/ share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/request-tracker3.8/lib/RT/Interface/Web.pm line 320
RT::Interface::Web:: ShowRequestedPage('HASH(0x5fec570)') called at /usr/share/request-tracker3.8/lib/RT/Interface/Web.pm line 224
RT::Interface::Web::HandleRequest('HASH(0x5fec570)' ) called at /usr/share/request-tracker3.8/html/autohandler line 53
HTML::Mason::Commands::__ANON__ at /usr/share/perl5/HTML/Mason/Component.pm line 135
HTML::Mason ::Component::run('HTML::Mason::Component::FileBased=HASH(0x58ae3b8)') called at /usr/share/perl5/HTML/Mason/Request.pm line 1273
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 1268
HTML::Mason::Request::comp(undef, undef, undef) called at /usr/share/perl5/HTML/Mason/Request.pm line 467
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 467
eval {...} at /usr/share/perl5/HTML/Mason/Request.pm line 419
HTML::Mason ::Request::exec('RT::Interface::Web::Request=HASH(0x7fc2baf068b0)') called at /usr/share/perl5/HTML/Mason/CGIHandler.pm line 193
eval {...} at /usr/share/perl5/HTML/Mason/CGIHandler.pm line 193
HTML::Mason::Request::CGI::exec('RT::Interface::Web::Request=HASH(0x7fc2baf068b0)') called at /usr/share/perl5/HTML/Mason/Interp.pm line 342
HTML::Mason::Interp::exec(undef, undef) called at /usr/share/perl5/HTML/Mason/CGIHandler.pm line 124
eval {...} at /usr/share/perl5/HTML/Mason/CGIHandler.pm line 124
HTML::Mason::CGIHandler::_handler('HTML::Mason::CGIHandler=HASH(0x5aa5688)', 'HASH(0x6037810)') called at /usr/share/perl5/HTML/Mason/CGIHandler.pm line 73
HTML::Mason::CGIHandler::handle_cgi_object('HTML::Mason::CGIHandler=HASH(0x5aa5688)', 'CGI::Fast=HASH(0x60319b0)') called at /usr/share/request-tracker3. 8/libexec/mason_handler.fcgi line 80
eval {...} at /usr/share/request-tracker3.8/libexec/mason_handler.fcgi line 80

Answer 1

At request-tracker.ru you are welcome.
Don't forget to give the rt user access to the mason_data and session_data folders, or something like that. It stores all sorts of cached elements there, if it cannot create it, it falls with any heresy.