So im going to try to be as detail as best as i can while trying to keep it short.

My hardware list.

Mobo Ga-p55-USB3 rev 2.0. (i really dont know what bios) I uploaded a custom bios for overclocking ><

Cpu i5 750><

Ram 1x 8gb crucial low profile ><

D-link DWA-125 for wifi (i dont use lan) but it does work

Graphics- ATI Radeon 5870 1gb Mac -><

Bootloader (chameleon)

Disk used iAkt0s L2 Mtn Lion

Steam says Launching then everytime it attempts to load it just dies

Process: launchd [435]

Path: /Users/USER/Library/Application Support/Steam/*/

Identifier: com.Klei.Shank2

Version: ??? (???)

Code Type: X86 (Native)

Parent Process: launchd [120]

Date/Time: 2013-06-20 22:05:01.142 -0400

OS Version: Mac OS X 10.7.5 (11G63)

Report Version: 9

Interval Since Last Report: 26012 sec

Crashes Since Last Report: 17

Per-App Crashes Since Last Report: 14

Anonymous UUID: F82B07E7-F86A-443E-A2CF-4B1C577C6FF5

Crashed Thread: Unknown


Exception Codes: KERN_INVALID_ADDRESS at 0x00000000000106a0

Backtrace not available

Unknown thread crashed with X86 Thread State (32-bit):

eax: 0x00000000 ebx: 0x00000000 ecx: 0x00000000 edx: 0x00000000

edi: 0x00000000 esi: 0x00000000 ebp: 0x00000000 esp: 0x00000000

ss: 0x00000023 efl: 0x00010202 eip: 0x000106a0 cs: 0x0000001b

ds: 0x00000023 es: 0x00000023 fs: 0x00000000 gs: 0x00000000

cr2: 0x000106a0

Logical CPU: 0

Binary images description not available

External Modification Summary:

Calls made by other processes targeting this process:

task_for_pid: 1

thread_create: 0

thread_set_state: 0

Calls made by this process:

task_for_pid: 0

thread_create: 0

thread_set_state: 0

Calls made by all processes on this machine:

task_for_pid: 1102

thread_create: 0

thread_set_state: 0

Model: MacPro3,1, BootROM MP31.006C.B05, 4 processors, Intel Core i5, 2.67 GHz, 8 GB, SMC 1.30f3

Graphics: ATI Radeon HD 5870, ATI Radeon HD 5870, PCIe, 1024 MB

Memory Module: Bank4/5/A2, 8 GB, DDR3, 1333 MHz, Crucial Technology, BLS8G3D1609ES2LX0.

Network Service: 11n Adapter, Ethernet, en1

Parallel ATA Device: _NEC DVD_RW ND-3550A

Parallel ATA Device: Maxtor 7V300F0, 300.09 GB

USB Device: USB Multimedia Keyboard, 0x04ca (Lite-On Technology Corp.), 0x002a, 0x5a100000 / 3

USB Device: USB Optical Mouse, 0x046d (Logitech Inc.), 0xc00c, 0x5a200000 / 2

USB Device: 11n Adapter, 0x07d1 (D-Link System), 0x3c16, 0xfd200000 / 2

sorry forgot to put the output of a game trying to launch

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