pthread_kill IOS Crash - ios

Question

We're currently trying to make an educational virtual reality application. The only problem we're facing is to get the app running on IOS (we built it in unity). The android version works fine and has no errors. An IOS build is a must for us so we really need it working.
Underneath I have pasted a crash log from my Iphone 4s. To be honest, we have no clue what to make of it for this is our first application build.
Has anyone got any tips for us or experience in unity to IOS builds and reading a crash log? We would love to hear some! Thanks in advance.
*Edit
Unity version 5.3.4f1 Personal
Used plug-ins/SDK:
Google VR SDK for Unity
https://developers.google.com/vr/unity/
NoTouchGUI plugin
https://www.assetstore.unity3d.com/en/#!/content/26494
That's it, thanks programmer for reminding me!
Incident Identifier: 3A8A3253-337B-46BD-A17F-DB2B74018814
CrashReporter Key: 47190c7f1e7f3a7e344624632391e43b74cc341f
Hardware Model: iPhone4,1
Process: 1666 [12315]
Path: /private/var/containers/Bundle/Application/65C0D573-063E-4560-9C7E-CC3250CC188B/1666.app/1666
Identifier: com.scheurbuik.1666
Version: 0 (1.0)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2016-06-06 15:34:33.33 +0200
Launch Time: 2016-06-06 15:34:23.23 +0200
OS Version: iOS 9.3.1 (13E238)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 3
Filtered syslog:
None found
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libsystem_kernel.dylib 0x25616920 semaphore_wait_trap + 8
1 libdispatch.dylib 0x02c7230a 0x2c62000 + 66314
2 GPUToolsCore 0x02ccbbd8 0x2cba000 + 72664
3 dyld 0x1ff0340c ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 184
4 dyld 0x1ff0350c ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 20
5 dyld 0x1feffa56 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 382
6 dyld 0x1fefeb7a ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 110
7 dyld 0x1fefec00 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 52
8 dyld 0x1fef2c7a dyld::initializeMainExecutable() + 134
9 dyld 0x1fef6c92 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 3770
10 dyld 0x1fef21ee dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 342
11 dyld 0x1fef2040 _dyld_start + 64
Thread 1:
0 libsystem_kernel.dylib 0x2562b864 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x256d1b34 _pthread_wqthread + 1036
2 libsystem_pthread.dylib 0x256d1718 start_wqthread + 8
Thread 2:
0 libsystem_kernel.dylib 0x2562b864 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x256d1b34 _pthread_wqthread + 1036
2 libsystem_pthread.dylib 0x256d1718 start_wqthread + 8
Thread 3 Crashed:
0 libsystem_kernel.dylib 0x2562ac5c __pthread_kill + 8
1 libsystem_pthread.dylib 0x256d4732 pthread_kill + 62
2 libsystem_c.dylib 0x255bf0ac abort + 108
3 GPUToolsCore 0x02cbf93e 0x2cba000 + 22846
4 GPUToolsCore 0x02cbe42e 0x2cba000 + 17454
5 GPUToolsCore 0x02ccbaaa 0x2cba000 + 72362
6 libsystem_pthread.dylib 0x256d385a _pthread_body + 138
7 libsystem_pthread.dylib 0x256d37ce _pthread_start + 110
8 libsystem_pthread.dylib 0x256d1724 thread_start + 8
Thread 4 name: Dispatch queue: com.apple.libdispatch-manager
Thread 4:
0 libsystem_kernel.dylib 0x2562c2f8 kevent_qos + 24
1 libdispatch.dylib 0x02c74470 0x2c62000 + 74864
2 libdispatch.dylib 0x02c6583e 0x2c62000 + 14398
Thread 3 crashed with ARM Thread State (32-bit):
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0x00000000
r4: 0x00000006 r5: 0x1f185000 r6: 0xffffffff r7: 0x1f184e84
r8: 0x02cfe114 r9: 0x3c191908 r10: 0x029f9ccb r11: 0x16680b30
ip: 0x00000148 sp: 0x1f184e78 lr: 0x256d4733 pc: 0x2562ac5c
cpsr: 0x00000010
Error Formulating Crash Report:
Failed while requesting activity/breadcrumb diagnostics