A tiny handful of "ancient" mods from 2007 only work on this version.
Moving from 1.0000 to 1.0001 usually preserves saves, but moving backwards from a higher version will definitely break them. A tiny handful of "ancient" mods from 2007
Since this is a legacy patch, you won't find it on official modern launchers like Steam or GOG (which come pre-patched to 1.0006). You can find it on: A tiny handful of "ancient" mods from 2007
or AP-PRO.ru: The biggest community hubs for S.T.A.L.K.E.R. A tiny handful of "ancient" mods from 2007