Wenever I try to launch SimplePlanes it crashes randomly...

I have a MacBook Pro 13" 2015

Crash report: (I deleted a lot of the report because it was waaaay too long)
Process: SimplePlanes [1378]
Path: /Users/USER/Library/Application Support/Steam/*/SimplePlanes.app/Contents/MacOS/SimplePlanes
Identifier: unity.Jundroo.SimplePlanes
Version: Unity Player version 5.3.6f1 (5.3.6f1)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: SimplePlanes [1378]
User ID: 501

Date/Time: 2016-12-20 18:14:19.988 +0100
OS Version: Mac OS X 10.12.1 (16B2657)
Report Version: 12
Anonymous UUID: 02F28CE2-6123-F946-976C-E7348AA94DB6

Sleep/Wake UUID: 1F7D6B5E-2D26-42DF-8969-2E4D6A454CDC

Time Awake Since Boot: 7800 seconds
Time Since Wake: 110 seconds

System Integrity Protection: enabled

Crashed Thread: 9 UnityGfxDeviceWorker

Exception Type: EXCBADACCESS (SIGABRT)
Exception Codes: KERNINVALIDADDRESS at 0x0000000000000000
Exception Note: EXCCORPSENOTIFY

VM Regions Near 0:
-->
__TEXT 0000000100000000-0000000101566000 [ 21.4M] r-x/rwx SM=COW /Users/USER/Library/Application Support/Steam/*/SimplePlanes.app/Contents/MacOS/SimplePlanes

Application Specific Information:
abort() called

External Modification Summary:
Calls made by other processes targeting this process:
taskforpid: 0
threadcreate: 0
threadsetstate: 0
Calls made by this process:
taskforpid: 0
threadcreate: 0
threadsetstate: 0
Calls made by all processes on this machine:
taskforpid: 4352
threadcreate: 0
threadset_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=331.6M resident=0K(0%) swappedoutorunallocated=331.6M(100%)
Writable regions: Total=400.8M written=0K(0%) resident=0K(0%) swappedout=0K(0%) unallocated=400.8M(100%)

                            VIRTUAL   REGION 

REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Accelerate framework 128K 2
Activity Tracing 256K 2
CG backing stores 16.5M 4
CG image 76K 7
CoreAnimation 68K 8
CoreUI image data 1240K 8
CoreUI image file 280K 5
Foundation 4K 2
Kernel Alloc Once 8K 2
MALLOC 299.0M 71
MALLOC guard page 48K 10
Memory Tag 242 12K 2
OpenGL GLSL 256K 4
STACK GUARD 56.2M 46
Stack 31.1M 47
VMALLOCATE 18.1M 53
VMALLOCATE (reserved) 4K 2 reserved VM address space (unallocated)
_DATA 25.6M 259
_GLSLBUILTINS 2588K 2
_IMAGE 528K 2
_LINKEDIT 134.6M 22
_TEXT 197.0M 253
_UNICODE 556K 2
mapped file 53.8M 16
shared memory 34.1M 16
=========== ======= =======
TOTAL 871.9M 822
TOTAL, minus reserved VM space 871.9M 822

Model: MacBookPro12,1, BootROM MBP121.0167.B17, 2 processors, Intel Core i5, 2,7 GHz, 8 GB, SMC 2.28f7
Graphics: Intel Iris Graphics 6100, Intel Iris Graphics 6100, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1867 MHz, 0x80CE, 0x4B3445364533303445452D45474346000000
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1867 MHz, 0x80CE, 0x4B3445364533303445452D45474346000000
AirPort: spairportwirelesscardtypeairport_extreme (0x14E4, 0x133), Broadcom BCM43xx 1.0 (7.21.171.47.1a8)
Bluetooth: Version 5.0.1f7, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0128G, 121,33 GB
USB Device: USB 3.0 Bus
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: MacBook Pro, Apple Inc., 27.1

Can anyone help me?