d21b73e5ff
This can happen if from one version to the next the number of columns has changed, and of course if invalid data is somehow put into the xfconf property.
xfce4-taskmanager
The xfce4-taskmanager component is an easy to use graphical task manager.
Homepage
Xfce4-taskmanager documentation
Changelog
See NEWS for details on changes and fixes made in the current release.
Source Code Repository
Download a Release Tarball
Xfce4-taskmanager archive or Xfce4-taskmanager tags
Installation
From source code repository:
% cd xfce4-taskmanager
% ./autogen.sh
% make
% make install
From release tarball:
% tar xf xfce4-taskmanager-<version>.tar.bz2
% cd xfce4-taskmanager-<version>
% ./configure
% make
% make install
Reporting Bugs
Visit the reporting bugs page to view currently open bug reports and instructions on reporting new bugs or submitting bugfixes.