Comment 5 for bug 921695

I think is fixed upstream by this commit:

"Fix crashing on opening multiple files after a .vik file is opened."
http://viking.git.sourceforge.net/git/gitweb.cgi?p=viking/viking;a=commit;h=08812b09d0bb6062a68b8aa90e6f07c78fd83923

Unfortunately you'll have to wait until Version 1.3 is released and made available in Ubuntu.