OS X problem (can't launch at all; just shows the "problem has occurred" window

[ice111222]

I installed SDL correctly (or as the website said word by word) and when i try to open PPSSPP, it comes up with this
Process: PPSSPPSDL [738]
Path: /Users/USER/Downloads/*/PPSSPPSDL.app/Contents/MacOS/PPSSPPSDL
Identifier: PPSSPPSDL
Version: ???
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: PPSSPPSDL [738]
User ID: 502

Date/Time: 2014-12-13 10:10:36.332 -0700
OS Version: Mac OS X 10.10.1 (14B25)
Report Version: 11
Anonymous UUID: EA22CE30-CC7E-400D-131E-D976F5679A94


Time Awake Since Boot: 3800 seconds

Crashed Thread: 0

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000

Application Specific Information:
dyld: launch, loading dependent libraries

Dyld Error Message:
Library not loaded: /usr/local/lib/libSDL-1.2.0.dylib
Referenced from: /Users/USER/Downloads/*/PPSSPPSDL.app/Contents/MacOS/PPSSPPSDL
Reason: no suitable image found. Did find:
/usr/local/lib/libSDL-1.2.0.dylib: mach-o, but wrong architecture
/usr/local/lib/libSDL-1.2.0.dylib: mach-o, but wrong architecture

Binary Images:
0x7fff63c3f000 - 0x7fff63c75837 dyld (353.2.1) <4696A982-1500-34EC-9777-1EF7A03E2659> /usr/lib/dyld

Model: iMac13,1, BootROM IM131.010A.B05, 4 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 2.9f5
Graphics: NVIDIA GeForce GT 640M, NVIDIA GeForce GT 640M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533643465238432D50422020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533643465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF4), Broadcom BCM43xx 1.0 (7.15.124.12.10)
Bluetooth: Version 4.3.1f2 15015, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD HTS541010A9E662, 1 TB
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: iMac, Apple Inc., 23.4