Reproduction steps:
1. Open the attached "Archive" project.
2. Build and run it for iOS (Simulator SDK).
- Application crashes:

* thread #1, stop reason = signal SIGABRT
* frame #0: 0x000000010f1cc9ee dyld`__abort_with_payload + 10
frame #1: 0x000000010f1cc43b dyld`abort_with_payload_wrapper_internal + 90
frame #2: 0x000000010f1cc464 dyld`abort_with_payload + 9
frame #3: 0x0000000103ae9bad dyld_sim`abort_with_payload + 34
frame #4: 0x0000000103ae2a7b dyld_sim`dyld::halt(char const*) + 354
frame #5: 0x0000000103ae4857 dyld_sim`dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 3669
frame #6: 0x0000000103ae0238 dyld_sim`start_sim + 136
frame #7: 0x000000010f1aa510 dyld`dyld::useSimulatorDyld(int, macho_header const*, char const*, int, char const**, char const**, char const**, unsigned long*, unsigned long*) + 2246
frame #8: 0x000000010f1a8a39 dyld`dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 241
frame #9: 0x000000010f1a4249 dyld`dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 470
frame #10: 0x000000010f1a4036 dyld`_dyld_start + 54

Reproduced with:
5.6.0b1, 2017.2.0a2
iOS 9.3, iOS 10.3

RESOLUTION: WONTFIX. The issue is caused by Vuforia plugin not having iOS Simulator support. The libVuforiaUnityPlayer.a plugin only has arm64 and armv7 architectures. Please contact the plugin vendor for iOS Simulator support.