The SourceForge and project pages say nothing about the target OS, hardware and software environment (libraries etc.) for the install package so I tried it on two 64 bit Ubuntu machines. It installed smoothly, both using both apt-get and the Software Center, but gave the following upon execution: "Unable to load library icui18n "Cannot load library icui18n: (libicui18n.so.48: wrong ELF class: ELFCLASS64)" QGtkStyle was unable to detect the current GTK+ theme." A GUI window opened but it was completely non-functional. Looks like the build environment was insufficiently robust for a 64-bit machine??