If you have any issues when trying to fly,
Follow the advice in the FAQ. (Section 17) is a good one to try first.
Also see 40) and 50)
AnKor's DX9 self shadowing dll is was included in WOFF3 and now the latest and updated for WOFF UE.
You WILL need DirectX 9 installed if not already (yes even if you have DirectX 11 already installed (Windows 7 or Windows 8/8.1, Windows 10 etc)
It is now included in the WOFF UE install such as C:\OBDSoftware\WOFF\Toolbox\DX9Redist
Run directx_Jun2010_redist.exe in there, it will extract to a folder you give it.
Go to that folder, then run DXSetup
You can also get it here http://www.microsoft.com/en-us/download/details.aspx?id=8109
but we recommend the one mentioned above.
Usually this works better than the small web-update version from Microsoft - that can often leave one or two files out.
More details on where to get DirectX 9 and how to install this correctly here:http://simhq.com/forum/ubbthreads.php/topics/4041135/WOFF_EXPANSION_TROUBLESHOOTING#Post4041135
See section 4 in the latest WOFF UE FAQ and other areas for help.http://www.overflandersfields.com/Downloads/FAQ%20WOFF%20UE.pdf