my macbook air OS X Yosemite can't open steam games

it's version is latest but my computer ca't open it and it says:

Process: rust [1194]

Path: /Users/USER/Library/Application Support/Steam/*/rust.app/Contents/MacOS/rust

Identifier: unity.Facepunch Studios LTD.Rust

Version: Unity Player version 5.1.2f1 (5.1.2f1)

Code Type: X86-64 (Native)

Parent Process: ??? [1]

Responsible: rust [1194]

User ID: 501

Date/Time: 2015-08-03 13:20:16.481 +0500

OS Version: Mac OS X 10.10.4 (14E46)

Report Version: 11

Anonymous UUID: 813FD241-BC3B-0EA2-9969-2089FF98DA09

Sleep/Wake UUID: 6A880579-BD2D-4D2D-B269-DE82B56AE426

Time Awake Since Boot: 7700 seconds

Time Since Wake: 6400 seconds

Crashed Thread: 0

Exception Type: EXC_BREAKPOINT (SIGTRAP)

Exception Codes: 0x0000000000000002, 0x0000000000000000

Application Specific Information:

dyld: launch, loading dependent libraries

DYLD_FALLBACK_LIBRARY_PATH=/Users/ozturk/Desktop/Masa üstü/Steam.app/Contents/MacOS:/Users/ozturk/Library/Application Support/Steam/steamapps/common/Rust:/Users/ozturk/Library/Application Support/Steam/steamapps/common/Rust/bin:/usr/local/lib:/lib:/usr/lib

DYLD_INSERT_LIBRARIES=/Users/ozturk/Desktop/Masa üstü/Steam.app/Contents/MacOS/gameoverlayrenderer.dylib:/Users/ozturk/Deskt op/Masa üstü/Steam.app/Contents/MacOS/steamloader.dylib

DYLD_LIBRARY_PATH=

Dyld Error Message:

could not load inserted library '/Users/ozturk/Desktop/Masa üstü/Steam.app/Contents/MacOS/gameoverlayrenderer.dylib' because image not found

Binary Images:

0x100000000 - 0x101313fdf +unity.Facepunch Studios LTD.Rust (Unity Player version 5.1.2f1 - 5.1.2f1) <DAA4E9D5-FD5E-3989-9BDC-FF6D2F8F4CE9> /Users/USER/Library/Application Support/Steam/*/rust.app/Contents/MacOS/rust

0x7fff6577b000 - 0x7fff657b1837 dyld (353.2.1) <72A99D0F-0B56-3938-ABC5-67A0F33757C4> /usr/lib/dyld

Model: MacBookAir4,2, BootROM MBA41.0077.B12, 2 processors, Intel Core i5, 1.7 GHz, 4 GB, SMC 1.73f66

Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In

Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020

Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xE9), Broadcom BCM43xx 1.0 (5.106.98.100.24)

Bluetooth: Version 4.3.5f8 15969, 3 services, 18 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en0

Serial ATA Device: OWC Aura Pro 6G SSD, 240,06 GB

USB Device: FaceTime Camera (Built-in)

USB Device: Hub

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: Apple Internal Keyboard / Trackpad

USB Device: Hub

USB Device: Internal Memory Card Reader

Thunderbolt Bus: MacBook Air, Apple Inc., 8.1