I’ve already tried the links you gave me and gave you the answer in my previous post. Here is how I receive this error: First I am creating a mobile project, maximum quality with starter content. Then I am configuring it for Android(I am clicking Configure now) and setting the min SDK Version 19 and Target 23. Then select all the tics for x86, x86_x64 and the other OpenGL version and just click launch on an x64 device. After this if I don’t add the files from the archive I’ve uploaded to the dir I said an error appears that they are missing, if they are there I get the error that wchar.h is missing and as I said it is really missing from android ndk’s clang. As I said I am using the last version of AndroidWorks, VS and UE. Could you tell me when did you cloned(downloaded) and compiled your Engine version, and what android ndk, sdk, ant, jdk versions did you used. Also could you please send me a log of successful compilation to ETC2/ETC1.