Ubuntu distributions: $ sudo apt-get install libgdk-pixbuf2.0-0:i386 libgtk2.0-0:i386 libqt5widgets5 Redhat, CentOS, Fedora or their relatives: $ yum install glib.i386 gtk2.i386 libSM.i386 qt4.i386 $ yum install glib.i686 gtk2.i686 libSM.i686 gdk-pixbuf2.i686 qt4.i686 If your OS is 64 bits, replace PonderosaClient64 to PonderosaClient. If you see any error related to importing shared libraries, try to install .i686 or :i386. If the error is QT related, please visit http://qt-project.org to install QT libraries. * qt-at-spi package is known to be buggy. Please remove. $ sudo apt-get remove qt-at-spi NMRFAM Software Development Team Nov. 26, 2014