eugene wrote: Sorry for bothering but I found the solution by myself.
The problem was in old config file located in /home/MyName/.config/Trolltech.conf which was full of unneeded records and
configs that was left of my kubuntu-kde4-desktop installation which I deleted. I simply removed this file to MyBackupDir and
started PostBooks 3.1.0. Now everything is good. -- Read more at http://www.xtuple.org/phpBB2/viewtopic.php?t=2937