System Error!

Help!! I’m getting this error message when I try to look at a ticket!!
What does it all mean?!

System error

  error:  Can't locate object method "Columns" via package

“RT::Attachments” at
/usr/local/rt3/share/html/Ticket/Elements/FindAttachments line 14.

  context:  ...
        10:
        11:
        12:  my $attachments = RT::Attachments->new(

$session{‘CurrentUser’} );
13:
14: $attachments->Columns( qw( Id Filename ContentType Headers
Subject Parent ContentEncoding ContentType TransactionId Created));
15:
16: if ( $Ticket->CurrentUserHasRight(‘ShowTicket’) ) {
17: my $transactions = $attachments->NewAlias(‘Transactions’);
18: $attachments->Join( ALIAS1 => ‘main’,

  code stack:

/usr/local/rt3/share/html/Ticket/Elements/FindAttachments:14
/usr/local/rt3/share/html/Ticket/Display.html:119
/usr/local/rt3/share/html/autohandler:196

Help!! I’m getting this error message when I try to look at a ticket!!
What does it all mean?!

It means you didn’t follow the instructions and install a recent enough
DBIx::SearchBuilder.