UE4 Visual Studio Build Failed

Hi guys,

I have been trying to use the 4.19 mod by AlienRenders which adds Dual Quaternion support to UE4.

I accidently first downloaded the 4.13 and it built fine in visual studio and I could use it. But then I downloaded 4.18 mod version I keep getting this error. I deleted everything and tried 4.19 mod and its the same.

Any help would be much appreciated.

Thanks.