[Deadstick]

This is what worked for me on the Steam download version:

1) Browse to your game folder and find the folder 'redist'.

I found mine here :C:\Program Files\Steam\steamapps\common\il-2 sturmovik cliffs of dover\redist

2) Try running the Direct X installer. ( This was the problem for me, but I had tried running all other installers in there too).

So pretty much run each installer in there. If it said 'repair' or 'uninstall' I just repaired it. But I found that for me, Direct X had not auto-installed in the first place. After I ran that and restarted my PC, it all appeared for me.

I hope that might help.

EDIT: I also updated the Nvidia driver to the latest one for my PC, and selected launcher.exe as a program in the Nvidia Control panel.