My apologies if you get this message twice, but I wanted to give it maximum exposure. Short story: with the next release, 2024c, we plan to make substantial changes to our 64-bit Windows build (though mostly they will not be very visible to users) and we'd like to get as many people as possible to give the new build a try in advance of the release (currently slated for the week beginning October 21). As of later today, the snapshot on sourceforge labeled gretl_install-64.exe will be the NEW build. If anyone tries it, has a problem, and wants to revert, a "traditional" snapshot will still be available: https://sourceforge.net/projects/gretl/files/snapshots/gretl_install-64-g... What's changed in the new build? * We now link against the "new" (starting with Windows 10) Microsoft C library, known as the Universal C Run-Time or UCRT. This is mainly a matter of future-proofing, but it may bring improved performance in some respects. * The graphical interface now uses version 3 of GTK (as opposed to GTK2). The main reason for this change is that gretl should look better on small high-resolution displays (as on laptops) when App-scaling is in force in Windows. * Many of the other third-party libraries on which gretl depends have been updated. * The cross-compiler with which we build gretl has been updated from gcc 10.3.0 to gcc 14.2.0. Allin Cottrell