Patch 4.11 not working

[tigertank44]

Hi,

I have a issue with Il2 1946 that I bought over Steam.
The version I received is 4.09 and it is working fine.

However all on-line server that I found are already running 4.11

There is no option to update the game via Steam so I downloaded the patch myself and installed in manually.
I did select the proper installation location (Program files -> Steam -> SteamApps -> Custom -> Il2 installation folder)

But after I launch the game it almost immediately returns back to desktop.
No error message.

I have Win7 system but I don't think that this is the problem since unpatched game works well.

I really want to play on-line.
Ubisoft and Steam support are not helpful at all.

Can someone please assist?