The error still occurs in edgy and gok 1.2.0. The followed the explanation in this thread already mentioned above and it fixed the problem. http://www.ubuntuforums.org/showthread.php?t=186890&highlight=gok
-- On-screen keyboard (gok v1.0.7-0ubuntu3) fails https://launchpad.net/bugs/42308 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
