We are also experiencing this problem. There seems to be a bug report here documenting the exact same issue: Unreal Engine Issues and Bug Tracker (UE-65983)
Unfortunately, it has been marked as “Cannot Reproduce” but I hope someone at Epic takes another look because it is clearly still an issue in 4.21 for several people.
I have spent several days already trying to fix this but my only solution is to use 4.19 at the moment. When you disable the Google VR plugin it launches successfully.
I have tried the following devices (All Android 8.0):
Samsung S7
Samsung A5 (2017)
LG G6
Strangely enough it seems to work when running on a Google Pixel 2 (Android 9.0).
We have tried:
- Different SDK and NDK configurations (we currently try to target android-26)
- Updated engine to 4.21.2
- Two different Windows 10 based development machines
- Fresh install of Unreal Engine and Android Development (as per UE documentation) on our Mac mini (OSX 10.14)
None of this has worked for us. My logcat is always the same result (exactly what AlloteSoftware posted).