There is new version Tkabber 0.11.1 Announce: http://tkabber.jabber.ru/tkabber-0.11.1 In this release added support tclgpg instead gpgme (http://code.google.com/p/tclgpg).
Thanks for the report, assigning to maintainers.
+ 28 Feb 2009; Patrick Lauer <patrick@gentoo.org> +tkabber-0.11.1.ebuild: + Bump to 0.11.1, fixes #242666