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Android AR app does not open

I am trying to launch the AR template using 4.21 onto a Samsung S9 Plus with android 9 installed. It builds to the phone just fine, but when it starts, it shows the Logo, then closes. here is the LogCat:

 Log file open, 03/02/19 00:59:56
 LogConsoleResponse: Display: Failed to find resolution value strings in scalability ini. Falling back to default.
 LogAndroid: Display: Choreographer set up.
 LogAndroid: Display: Android Version Make Model BuildNumber Language: 9 samsung SM-G965U PPR1.180610.011.G965USQS3CSAG en_US
 LogAndroid: Case APP_CMD_START
 LogAndroid: Case APP_CMD_RESUME
 LogGoogleARCore: OnResume Called: 0
 LogAndroid: Case APP_CMD_INPUT_CHANGED
 LogAndroid: Case APP_CMD_INIT_WINDOW
 LogAndroid: Case APP_CMD_PAUSE
 LogPakFile: Registered encryption key '00000000000000000000000000000000': 0 pak files mounted, 0 remain pending
 LogGoogleARCore: OnPause Called: 0
 LogTemp: 8 cores and 8 assignable cores
 LogTaskGraph: Started task graph with 5 named threads and 17 total threads with 3 sets of task threads.
 LogStats: Stats thread started at 0.500224
 LogAndroid: Case APP_CMD_GAINED_FOCUS
 LogICUInternationalization: ICU TimeZone Detection - Raw Offset: -8:00, Platform Override: ''
 LogAndroid: Case APP_CMD_LOST_FOCUS
 LogAndroid: Vulkan library detected, checking for available driver
 LogAndroid: VulkanRHI is available, Vulkan capable device detected.
 LogAndroid: Case APP_CMD_RESUME
 LogPluginManager: Error: Unable to load plugin 'DatasmithImporter'. Aborting.
 LogAndroid: Error: === Critical error: ===
 LogAndroid: Error: 
 LogAndroid: Error: Assertion failed: false [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\Launch\Private\Android\LaunchAndroid.cpp] [Line: 415] 
 LogAndroid: Error: Engine Preinit Failed
 LogAndroid: Error: [Callstack] 0x00000000CCCEDB8C (0x000000000292CB8C) libUE4.so!AndroidMain(android_app*)  []
 LogAndroid: Error: [Callstack] 0x00000000CCCFB220 (0x000000000293A220) libUE4.so!android_main()  []
 LogAndroid: Error: [Callstack] 0x00000000CCD1CA98 (0x000000000295BA98) libUE4.so![Unknown]()  []
 LogAndroid: Error: [Callstack] 0x00000000F39AAB36 (0x0000000000064B36) libc.so![Unknown]()  []
 LogAndroid: Error: [Callstack] 0x00000000F396448E (0x000000000001E48E) libc.so![Unknown]()  []
 LogAndroid: Error: 
 LogAndroid: Error: 
 LogAndroid: Error: 
 LogAndroid: Error: 

Product Version: UE 4.21
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asked Mar 03 '19 at 08:33 AM in Using UE4

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Dracomancer
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