Nexus 9 fails due to unrecognized CPU architecture. Need to add mapping of arm64-v8a to arm64 (UE4 internal architecture for this part) so it will fall back to armv7 for now and in future use 64-bit version.
1. Create any project for Android
2. Launch on Nexus 9
Head over to the existing Questions & Answers thread and let us know what's up.