[rt-users] Session error

[Rich Birch]

I've just managed to get rt installed on a redhat enterprise 4 server, with 
mysql 5.0. The database was installed fine and I get the login page upon the 
first visit to the rt site, but if i refresh the page or attempt to log in i 
get the following error:


---------------------------
RT couldn't store your session.
This may mean that that the directory '/opt/rt3/var/session_data' isn't 
writable or a database table is missing or corrupt.



Trace begun at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Exceptions.pm line 
129
HTML::Mason::Exceptions::rethrow_exception('RT couldn\'t store your 
session.^JThis may mean that that the directory \'/opt/rt3/var/session_data\' 
isn\'t writable or a database table is missing or corrupt.^J^J') called 
at /opt/rt3/share/html/Elements/SetupSessionCookie line 90
HTML::Mason::Commands::__ANON__ 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb6467b4)') 
called at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 1251
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 1245
HTML::Mason::Request::comp(undef, undef) called 
at /opt/rt3/share/html/autohandler line 73
HTML::Mason::Commands::__ANON__ 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Component.pm line 135
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0xb6157ec)') 
called at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 1246
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 1245
HTML::Mason::Request::comp(undef, undef, undef) called 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 459
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 459
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Request.pm line 411
HTML::Mason::Request::exec('HTML::Mason::Request::CGI=HASH(0xb218340)') called 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/CGIHandler.pm line 192
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/CGIHandler.pm line 192
HTML::Mason::Request::CGI::exec('HTML::Mason::Request::CGI=HASH(0xb218340)') 
called at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/Interp.pm line 342
HTML::Mason::Interp::exec(undef, undef) called 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/CGIHandler.pm line 123
eval {...} at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/CGIHandler.pm line 123
HTML::Mason::CGIHandler::_handler('HTML::Mason::CGIHandler=HASH(0xb323aa4)', 
'HASH(0xb587c34)') called 
at /usr/lib/perl5/site_perl/5.8.5/HTML/Mason/CGIHandler.pm line 73
HTML::Mason::CGIHandler::handle_cgi_object('HTML::Mason::CGIHandler=HASH(0xb323aa4)', 
'CGI::Fast=HASH(0xb587710)') called at /opt/rt3/bin/mason_handler.fcgi line 
76
eval {...} at /opt/rt3/bin/mason_handler.fcgi line 76

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I've checked the sessions table and there is an entry there. What could be the 
problem?