Portupgrade port error

[Jos Chrispijn]

   Dear group,
   Just tried to upgrade to portupgrade with portmaster but something goes
   wrong here:
   ===>  Building package for portupgrade-2.4.11.2,2
   Creating package /usr/ports/packages/All/portupgrade-2.4.11.2,2.tbz
   Registering depends: ruby19-bdb-0.6.6_1 db41-4.1.25_4 ruby-1.9.3.448,1
   libexecinfo-1.1_3 libffi-3.0.13 libyaml-0.1.4_2.
   Registering conflicts: portupgrade-devel-*.
   Creating bzip'd tar ball in
   '/usr/ports/packages/All/portupgrade-2.4.11.2,2.tbz'
   tar: libdata/ldconfig/portupgrade: Cannot stat: No such file or
   directory
   tar: Error exit delayed from previous errors.
   pkg_create: make_dist: tar command failed with code 256
   *** [do-package] Error code 1
   Stop in /usr/ports/ports-mgmt/portupgrade.
   *** [install] Error code 1
   Stop in /usr/ports/ports-mgmt/portupgrade.
   ===>>> A backup package for portupgrade-2.4.11.1,2 should
          be located in /usr/ports/packages/portmaster-backup
   ===>>> Installation of portupgrade-2.4.11.2,2 (ports-mgmt/portupgrade)
   failed
   ===>>> Aborting update
   ===>>> Update for ports-mgmt/portupgrade failed
   ===>>> Aborting update
   ===>>> Killing background jobs
   Terminated
   ===>>> You can restart from the point of failure with this command
   line:
          portmaster <flags> ports-mgmt/portupgrade
   ===>>> Exiting
   Can you tell me how I can solve this issue?
   Thanks in advance,
   Jos Chrispijn