Patch version

[Buzpilot]

If you do it correct, it should show 1.00.14214 on main menu, I use Winrar running as administrator set in settings (right-click and open utilities or what it's called, using non english myself, and open Compatibility menu, then select 'Run as admin')
I have my steam installed in C:\games, so it's probably slightly different from mine.
Extract the beta udate manually into C:\Games\Steam\steamapps\common\il-2 sturmovik cliffs of dover.