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I've just had the problem it was due to using ^2.0.0-beta.10 and the incorrectly published RC version being seen as the higher/newer version 

flex layout flex-layout not compatible with Angular 5.0 because of OpaqueToken

With the yesterday's 2.0.0-beta-4 release of angular/material2 one of the highlights of which was improved Angular Universal support via PR 4251 

flex layout Using flex-layout with Angular Universal

Summary of what was discussed on Gitter so far:
Provide an enum Event:


Events are processed asynchronously 

amethyst Provide some sort of event system

For me I made it work by coping C:\Users\%username%\AppData\Local\Android\sdk\ndk-bundle\sources\cxx-stl\llvm-libc++\libs\%platform%\libc++_shared.so together in .apk
Also check in bx/scripts/toolchain.lua there are this lines:

By default it only builds for android-24 (which is 7.0+) and might be a bit new to your device