Actually, im using Wireshark 1.5 SVN and Xplico 0.6.1 without problems.
You could try unninstalling
apt-get purge wireshark tshark
I've made a script that installs AND configures Xplico to start working.
When i say configure, im speaking of editing the php.ini and editing the size of the upload files to 400M and the post to 800M.
Script Installation | by Nsark
sudo apt-get update && sudo apt-get install -y gdebi sed && wget
http://sourceforge.net/projects/xplico/files/Xplico%20versions/version%200.6.1/xplico_0.6.1_i386.deb && sudo gdebi -n xplico* && sudo find /etc/php5/apache2/php.ini -exec sed -i.bak 's/post_max_size = 8M/post_max_size = 800M/g; s/upload_max_filesize = 2M/upload_max_filesize = 400M/g' {} \; && sudo service apache2 restart && sudo service xplico restart && firefox localhost:9876
Works on Ubuntu-i386 10.10 Live (Universe repositories activated)
Works on GnacktrackR3 Live
After this upgrade wireshark to a better version or use the SVN repositories.
You can hijack cookies with Xplico in a matter of seconds, try a look at this
http://wiki.xplico.org/doku.php?id=tips_tricks:cookie