On Linux you must also install the package libpasastro available from https://sourceforge.net/projects/libpasastro/
This directory contain recent snapshot based on the SVN source code.
The installer here can be used instead of the stable version for an initial installation or to update any existing version.
If you upgrade from Windows 32bit to 64bit version you must be carefull to keep only one version in "Program Files" or in "Program Files (x86)", but not the two. I recommend you uninstall the 32bit version first.
Use them to test the latest function but remember they are automatically generated and untested.
As thing can be worst than before, be prepared to reinstall a previous version.
If you get a program crash during your testing please look at the Degug folder above for more information.
Detail of what changed can be guessed from the SVN change log:
or from the roadmap :
The update-bin-* files contain only the last main executable file.
This is a convenience for user with very slow Internet connection. Use it only if you already install a full update of the same version. If you get an error after installing this file please install the full upgrade before to open a bug report.