After being able to install 1.5.9 on Ubuntu 14.04, when there is no deb file on SourceForge (thanks mytrant for the info re the use of alien to convert from rpm) I was disappointed to find that the bug which prevents a project which has baseline set from saving in xml is back. This is a bug which had been present in 1.5.7 and earlier  version but had been resolved in 1.5.8; although 1.5.8 had its own problems with resetting dates and durations if saved with a baseline!